877 lines
34 KiB
C++
877 lines
34 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CertVerifier.h"
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#include <stdint.h>
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#include "CTKnownLogs.h"
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#include "ExtendedValidation.h"
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#include "MultiLogCTVerifier.h"
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#include "NSSCertDBTrustDomain.h"
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#include "NSSErrorsService.h"
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#include "cert.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/Casting.h"
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#include "nsNSSComponent.h"
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#include "nsServiceManagerUtils.h"
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#include "pk11pub.h"
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#include "pkix/pkix.h"
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#include "pkix/pkixnss.h"
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#include "prerror.h"
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#include "secerr.h"
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#include "secmod.h"
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#include "sslerr.h"
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using namespace mozilla::ct;
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using namespace mozilla::pkix;
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using namespace mozilla::psm;
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mozilla::LazyLogModule gCertVerifierLog("certverifier");
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namespace mozilla { namespace psm {
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const CertVerifier::Flags CertVerifier::FLAG_LOCAL_ONLY = 1;
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const CertVerifier::Flags CertVerifier::FLAG_MUST_BE_EV = 2;
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const CertVerifier::Flags CertVerifier::FLAG_TLS_IGNORE_STATUS_REQUEST = 4;
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CertVerifier::CertVerifier(OcspDownloadConfig odc,
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OcspStrictConfig osc,
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OcspGetConfig ogc,
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uint32_t certShortLifetimeInDays,
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SHA1Mode sha1Mode,
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BRNameMatchingPolicy::Mode nameMatchingMode,
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NetscapeStepUpPolicy netscapeStepUpPolicy,
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CertificateTransparencyMode ctMode)
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: mOCSPDownloadConfig(odc)
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, mOCSPStrict(osc == ocspStrict)
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, mOCSPGETEnabled(ogc == ocspGetEnabled)
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, mCertShortLifetimeInDays(certShortLifetimeInDays)
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, mSHA1Mode(sha1Mode)
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, mNameMatchingMode(nameMatchingMode)
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, mNetscapeStepUpPolicy(netscapeStepUpPolicy)
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, mCTMode(ctMode)
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{
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LoadKnownCTLogs();
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}
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CertVerifier::~CertVerifier()
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{
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}
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Result
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IsCertChainRootBuiltInRoot(const UniqueCERTCertList& chain, bool& result)
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{
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if (!chain || CERT_LIST_EMPTY(chain)) {
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return Result::FATAL_ERROR_LIBRARY_FAILURE;
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}
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CERTCertListNode* rootNode = CERT_LIST_TAIL(chain);
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if (!rootNode) {
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return Result::FATAL_ERROR_LIBRARY_FAILURE;
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}
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CERTCertificate* root = rootNode->cert;
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if (!root) {
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return Result::FATAL_ERROR_LIBRARY_FAILURE;
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}
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return IsCertBuiltInRoot(root, result);
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}
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Result
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IsCertBuiltInRoot(CERTCertificate* cert, bool& result)
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{
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result = false;
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#ifdef DEBUG
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nsCOMPtr<nsINSSComponent> component(do_GetService(PSM_COMPONENT_CONTRACTID));
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if (!component) {
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return Result::FATAL_ERROR_LIBRARY_FAILURE;
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}
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nsresult rv = component->IsCertTestBuiltInRoot(cert, result);
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if (NS_FAILED(rv)) {
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return Result::FATAL_ERROR_LIBRARY_FAILURE;
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}
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if (result) {
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return Success;
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}
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#endif // DEBUG
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AutoSECMODListReadLock lock;
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for (SECMODModuleList* list = SECMOD_GetDefaultModuleList(); list;
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list = list->next) {
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for (int i = 0; i < list->module->slotCount; i++) {
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PK11SlotInfo* slot = list->module->slots[i];
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// PK11_HasRootCerts should return true if and only if the given slot has
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// an object with a CKA_CLASS of CKO_NETSCAPE_BUILTIN_ROOT_LIST, which
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// should be true only of the builtin root list.
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// If we can find a copy of the given certificate on the slot with the
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// builtin root list, that certificate must be a builtin.
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if (PK11_IsPresent(slot) && PK11_HasRootCerts(slot) &&
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PK11_FindCertInSlot(slot, cert, nullptr) != CK_INVALID_HANDLE) {
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result = true;
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return Success;
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}
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}
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}
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return Success;
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}
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static Result
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BuildCertChainForOneKeyUsage(NSSCertDBTrustDomain& trustDomain, Input certDER,
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Time time, KeyUsage ku1, KeyUsage ku2,
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KeyUsage ku3, KeyPurposeId eku,
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const CertPolicyId& requiredPolicy,
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const Input* stapledOCSPResponse,
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/*optional out*/ CertVerifier::OCSPStaplingStatus*
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ocspStaplingStatus)
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{
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trustDomain.ResetAccumulatedState();
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Result rv = BuildCertChain(trustDomain, certDER, time,
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EndEntityOrCA::MustBeEndEntity, ku1,
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eku, requiredPolicy, stapledOCSPResponse);
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if (rv == Result::ERROR_INADEQUATE_KEY_USAGE) {
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trustDomain.ResetAccumulatedState();
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rv = BuildCertChain(trustDomain, certDER, time,
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EndEntityOrCA::MustBeEndEntity, ku2,
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eku, requiredPolicy, stapledOCSPResponse);
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if (rv == Result::ERROR_INADEQUATE_KEY_USAGE) {
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trustDomain.ResetAccumulatedState();
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rv = BuildCertChain(trustDomain, certDER, time,
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EndEntityOrCA::MustBeEndEntity, ku3,
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eku, requiredPolicy, stapledOCSPResponse);
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if (rv != Success) {
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rv = Result::ERROR_INADEQUATE_KEY_USAGE;
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}
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}
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}
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if (ocspStaplingStatus) {
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*ocspStaplingStatus = trustDomain.GetOCSPStaplingStatus();
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}
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return rv;
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}
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void
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CertVerifier::LoadKnownCTLogs()
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{
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mCTVerifier = MakeUnique<MultiLogCTVerifier>();
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for (const CTLogInfo& log : kCTLogList) {
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Input publicKey;
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Result rv = publicKey.Init(
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BitwiseCast<const uint8_t*, const char*>(log.logKey), log.logKeyLength);
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if (rv != Success) {
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MOZ_ASSERT_UNREACHABLE("Failed reading a log key for a known CT Log");
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continue;
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}
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rv = mCTVerifier->AddLog(publicKey);
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if (rv != Success) {
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MOZ_ASSERT_UNREACHABLE("Failed initializing a known CT Log");
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continue;
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}
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}
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}
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Result
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CertVerifier::VerifySignedCertificateTimestamps(
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NSSCertDBTrustDomain& trustDomain, const UniqueCERTCertList& builtChain,
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Input sctsFromTLS, Time time,
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/*optional out*/ CertificateTransparencyInfo* ctInfo)
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{
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if (ctInfo) {
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ctInfo->Reset();
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}
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if (mCTMode == CertificateTransparencyMode::Disabled) {
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return Success;
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}
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if (ctInfo) {
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ctInfo->enabled = true;
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}
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if (!builtChain || CERT_LIST_EMPTY(builtChain)) {
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return Result::FATAL_ERROR_INVALID_ARGS;
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}
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bool gotScts = false;
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Input embeddedSCTs = trustDomain.GetSCTListFromCertificate();
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if (embeddedSCTs.GetLength() > 0) {
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gotScts = true;
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MOZ_LOG(gCertVerifierLog, LogLevel::Debug,
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("Got embedded SCT data of length %zu\n",
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static_cast<size_t>(embeddedSCTs.GetLength())));
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}
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Input sctsFromOCSP = trustDomain.GetSCTListFromOCSPStapling();
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if (sctsFromOCSP.GetLength() > 0) {
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gotScts = true;
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MOZ_LOG(gCertVerifierLog, LogLevel::Debug,
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("Got OCSP SCT data of length %zu\n",
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static_cast<size_t>(sctsFromOCSP.GetLength())));
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}
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if (sctsFromTLS.GetLength() > 0) {
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gotScts = true;
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MOZ_LOG(gCertVerifierLog, LogLevel::Debug,
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("Got TLS SCT data of length %zu\n",
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static_cast<size_t>(sctsFromTLS.GetLength())));
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}
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if (!gotScts) {
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return Success;
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}
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CERTCertListNode* endEntityNode = CERT_LIST_HEAD(builtChain);
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if (!endEntityNode || CERT_LIST_END(endEntityNode, builtChain)) {
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return Result::FATAL_ERROR_INVALID_ARGS;
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}
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CERTCertListNode* issuerNode = CERT_LIST_NEXT(endEntityNode);
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if (!issuerNode || CERT_LIST_END(issuerNode, builtChain)) {
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// Issuer certificate is required for SCT verification.
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return Result::FATAL_ERROR_INVALID_ARGS;
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}
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CERTCertificate* endEntity = endEntityNode->cert;
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CERTCertificate* issuer = issuerNode->cert;
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if (!endEntity || !issuer) {
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return Result::FATAL_ERROR_INVALID_ARGS;
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}
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Input endEntityDER;
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Result rv = endEntityDER.Init(endEntity->derCert.data,
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endEntity->derCert.len);
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if (rv != Success) {
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return rv;
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}
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Input issuerPublicKeyDER;
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rv = issuerPublicKeyDER.Init(issuer->derPublicKey.data,
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issuer->derPublicKey.len);
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if (rv != Success) {
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return rv;
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}
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CTVerifyResult result;
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rv = mCTVerifier->Verify(endEntityDER, issuerPublicKeyDER,
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embeddedSCTs, sctsFromOCSP, sctsFromTLS, time,
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result);
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if (rv != Success) {
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MOZ_LOG(gCertVerifierLog, LogLevel::Debug,
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("SCT verification failed with fatal error %i\n", rv));
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return rv;
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}
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if (MOZ_LOG_TEST(gCertVerifierLog, LogLevel::Debug)) {
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size_t verifiedCount = 0;
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size_t unknownLogCount = 0;
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size_t invalidSignatureCount = 0;
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size_t invalidTimestampCount = 0;
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for (const SignedCertificateTimestamp& sct : result.scts) {
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switch (sct.verificationStatus) {
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case SignedCertificateTimestamp::VerificationStatus::OK:
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verifiedCount++;
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break;
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case SignedCertificateTimestamp::VerificationStatus::UnknownLog:
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unknownLogCount++;
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break;
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case SignedCertificateTimestamp::VerificationStatus::InvalidSignature:
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invalidSignatureCount++;
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break;
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case SignedCertificateTimestamp::VerificationStatus::InvalidTimestamp:
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invalidTimestampCount++;
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break;
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case SignedCertificateTimestamp::VerificationStatus::None:
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default:
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MOZ_ASSERT_UNREACHABLE("Unexpected SCT verificationStatus");
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}
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}
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MOZ_LOG(gCertVerifierLog, LogLevel::Debug,
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("SCT verification result: "
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"verified=%zu unknownLog=%zu "
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"invalidSignature=%zu invalidTimestamp=%zu "
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"decodingErrors=%zu\n",
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verifiedCount, unknownLogCount,
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invalidSignatureCount, invalidTimestampCount,
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result.decodingErrors));
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}
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if (ctInfo) {
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ctInfo->processedSCTs = true;
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ctInfo->verifyResult = Move(result);
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}
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return Success;
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}
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bool
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CertVerifier::SHA1ModeMoreRestrictiveThanGivenMode(SHA1Mode mode)
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{
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switch (mSHA1Mode) {
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case SHA1Mode::Forbidden:
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return mode != SHA1Mode::Forbidden;
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case SHA1Mode::ImportedRoot:
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return mode != SHA1Mode::Forbidden && mode != SHA1Mode::ImportedRoot;
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case SHA1Mode::ImportedRootOrBefore2016:
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return mode == SHA1Mode::Allowed;
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case SHA1Mode::Allowed:
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return false;
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// MSVC warns unless we explicitly handle this now-unused option.
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case SHA1Mode::UsedToBeBefore2016ButNowIsForbidden:
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default:
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MOZ_ASSERT(false, "unexpected SHA1Mode type");
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return true;
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}
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}
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static const unsigned int MIN_RSA_BITS = 2048;
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static const unsigned int MIN_RSA_BITS_WEAK = 1024;
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Result
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CertVerifier::VerifyCert(CERTCertificate* cert, SECCertificateUsage usage,
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Time time, void* pinArg, const char* hostname,
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/*out*/ UniqueCERTCertList& builtChain,
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/*optional*/ const Flags flags,
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/*optional*/ const SECItem* stapledOCSPResponseSECItem,
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/*optional*/ const SECItem* sctsFromTLSSECItem,
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/*optional*/ const NeckoOriginAttributes& originAttributes,
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/*optional out*/ SECOidTag* evOidPolicy,
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/*optional out*/ OCSPStaplingStatus* ocspStaplingStatus,
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/*optional out*/ KeySizeStatus* keySizeStatus,
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/*optional out*/ SHA1ModeResult* sha1ModeResult,
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/*optional out*/ CertificateTransparencyInfo* ctInfo)
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{
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MOZ_LOG(gCertVerifierLog, LogLevel::Debug, ("Top of VerifyCert\n"));
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PR_ASSERT(cert);
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PR_ASSERT(usage == certificateUsageSSLServer || !(flags & FLAG_MUST_BE_EV));
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PR_ASSERT(usage == certificateUsageSSLServer || !keySizeStatus);
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PR_ASSERT(usage == certificateUsageSSLServer || !sha1ModeResult);
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if (evOidPolicy) {
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*evOidPolicy = SEC_OID_UNKNOWN;
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}
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if (ocspStaplingStatus) {
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if (usage != certificateUsageSSLServer) {
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return Result::FATAL_ERROR_INVALID_ARGS;
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}
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*ocspStaplingStatus = OCSP_STAPLING_NEVER_CHECKED;
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}
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if (keySizeStatus) {
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if (usage != certificateUsageSSLServer) {
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return Result::FATAL_ERROR_INVALID_ARGS;
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}
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*keySizeStatus = KeySizeStatus::NeverChecked;
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}
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if (sha1ModeResult) {
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if (usage != certificateUsageSSLServer) {
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return Result::FATAL_ERROR_INVALID_ARGS;
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}
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*sha1ModeResult = SHA1ModeResult::NeverChecked;
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}
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if (!cert ||
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(usage != certificateUsageSSLServer && (flags & FLAG_MUST_BE_EV))) {
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return Result::FATAL_ERROR_INVALID_ARGS;
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}
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Input certDER;
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Result rv = certDER.Init(cert->derCert.data, cert->derCert.len);
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if (rv != Success) {
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return rv;
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}
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// We configure the OCSP fetching modes separately for EV and non-EV
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// verifications.
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NSSCertDBTrustDomain::OCSPFetching defaultOCSPFetching
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= (mOCSPDownloadConfig == ocspOff) ||
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(mOCSPDownloadConfig == ocspEVOnly) ||
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(flags & FLAG_LOCAL_ONLY) ? NSSCertDBTrustDomain::NeverFetchOCSP
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: !mOCSPStrict ? NSSCertDBTrustDomain::FetchOCSPForDVSoftFail
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: NSSCertDBTrustDomain::FetchOCSPForDVHardFail;
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OcspGetConfig ocspGETConfig = mOCSPGETEnabled ? ocspGetEnabled
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: ocspGetDisabled;
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Input stapledOCSPResponseInput;
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const Input* stapledOCSPResponse = nullptr;
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if (stapledOCSPResponseSECItem) {
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rv = stapledOCSPResponseInput.Init(stapledOCSPResponseSECItem->data,
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stapledOCSPResponseSECItem->len);
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if (rv != Success) {
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// The stapled OCSP response was too big.
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return Result::ERROR_OCSP_MALFORMED_RESPONSE;
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}
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stapledOCSPResponse = &stapledOCSPResponseInput;
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}
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Input sctsFromTLSInput;
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if (sctsFromTLSSECItem) {
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rv = sctsFromTLSInput.Init(sctsFromTLSSECItem->data,
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sctsFromTLSSECItem->len);
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// Silently discard the error of the extension being too big,
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// do not fail the verification.
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MOZ_ASSERT(rv == Success);
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}
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switch (usage) {
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case certificateUsageSSLClient: {
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// XXX: We don't really have a trust bit for SSL client authentication so
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// just use trustEmail as it is the closest alternative.
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NSSCertDBTrustDomain trustDomain(trustEmail, defaultOCSPFetching,
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mOCSPCache, pinArg, ocspGETConfig,
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mCertShortLifetimeInDays,
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MIN_RSA_BITS_WEAK,
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ValidityCheckingMode::CheckingOff,
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SHA1Mode::Allowed,
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NetscapeStepUpPolicy::NeverMatch,
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originAttributes,
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builtChain);
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rv = BuildCertChain(trustDomain, certDER, time,
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EndEntityOrCA::MustBeEndEntity,
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KeyUsage::digitalSignature,
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KeyPurposeId::id_kp_clientAuth,
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CertPolicyId::anyPolicy, stapledOCSPResponse);
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break;
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}
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case certificateUsageSSLServer: {
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// TODO: When verifying a certificate in an SSL handshake, we should
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// restrict the acceptable key usage based on the key exchange method
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// chosen by the server.
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// These configurations are in order of most restrictive to least
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// restrictive. This enables us to gather telemetry on the expected
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// results of setting the default policy to a particular configuration.
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SHA1Mode sha1ModeConfigurations[] = {
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SHA1Mode::Forbidden,
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SHA1Mode::ImportedRoot,
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SHA1Mode::ImportedRootOrBefore2016,
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SHA1Mode::Allowed,
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};
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SHA1ModeResult sha1ModeResults[] = {
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SHA1ModeResult::SucceededWithoutSHA1,
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SHA1ModeResult::SucceededWithImportedRoot,
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SHA1ModeResult::SucceededWithImportedRootOrSHA1Before2016,
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SHA1ModeResult::SucceededWithSHA1,
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};
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size_t sha1ModeConfigurationsCount = MOZ_ARRAY_LENGTH(sha1ModeConfigurations);
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static_assert(MOZ_ARRAY_LENGTH(sha1ModeConfigurations) ==
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MOZ_ARRAY_LENGTH(sha1ModeResults),
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"digestAlgorithm array lengths differ");
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rv = Result::ERROR_UNKNOWN_ERROR;
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// Try to validate for EV first.
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NSSCertDBTrustDomain::OCSPFetching evOCSPFetching
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= (mOCSPDownloadConfig == ocspOff) ||
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(flags & FLAG_LOCAL_ONLY) ? NSSCertDBTrustDomain::LocalOnlyOCSPForEV
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: NSSCertDBTrustDomain::FetchOCSPForEV;
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CertPolicyId evPolicy;
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SECOidTag evPolicyOidTag;
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SECStatus srv = GetFirstEVPolicy(cert, evPolicy, evPolicyOidTag);
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for (size_t i = 0;
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i < sha1ModeConfigurationsCount && rv != Success && srv == SECSuccess;
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i++) {
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// Don't attempt verification if the SHA1 mode set by preferences
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// (mSHA1Mode) is more restrictive than the SHA1 mode option we're on.
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// (To put it another way, only attempt verification if the SHA1 mode
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// option we're on is as restrictive or more restrictive than
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// mSHA1Mode.) This allows us to gather telemetry information while
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// still enforcing the mode set by preferences.
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if (SHA1ModeMoreRestrictiveThanGivenMode(sha1ModeConfigurations[i])) {
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continue;
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}
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NSSCertDBTrustDomain
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trustDomain(trustSSL, evOCSPFetching,
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mOCSPCache, pinArg, ocspGETConfig,
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mCertShortLifetimeInDays, MIN_RSA_BITS,
|
|
ValidityCheckingMode::CheckForEV,
|
|
sha1ModeConfigurations[i], mNetscapeStepUpPolicy,
|
|
originAttributes, builtChain);
|
|
rv = BuildCertChainForOneKeyUsage(trustDomain, certDER, time,
|
|
KeyUsage::digitalSignature,// (EC)DHE
|
|
KeyUsage::keyEncipherment, // RSA
|
|
KeyUsage::keyAgreement, // (EC)DH
|
|
KeyPurposeId::id_kp_serverAuth,
|
|
evPolicy, stapledOCSPResponse,
|
|
ocspStaplingStatus);
|
|
if (rv == Success &&
|
|
sha1ModeConfigurations[i] == SHA1Mode::ImportedRoot) {
|
|
bool isBuiltInRoot = false;
|
|
rv = IsCertChainRootBuiltInRoot(builtChain, isBuiltInRoot);
|
|
if (rv != Success) {
|
|
break;
|
|
}
|
|
if (isBuiltInRoot) {
|
|
rv = Result::ERROR_CERT_SIGNATURE_ALGORITHM_DISABLED;
|
|
}
|
|
}
|
|
if (rv == Success) {
|
|
MOZ_LOG(gCertVerifierLog, LogLevel::Debug,
|
|
("cert is EV with status %i\n", sha1ModeResults[i]));
|
|
if (evOidPolicy) {
|
|
*evOidPolicy = evPolicyOidTag;
|
|
}
|
|
if (sha1ModeResult) {
|
|
*sha1ModeResult = sha1ModeResults[i];
|
|
}
|
|
rv = VerifySignedCertificateTimestamps(trustDomain, builtChain,
|
|
sctsFromTLSInput, time,
|
|
ctInfo);
|
|
if (rv != Success) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (rv == Success) {
|
|
break;
|
|
}
|
|
|
|
if (flags & FLAG_MUST_BE_EV) {
|
|
rv = Result::ERROR_POLICY_VALIDATION_FAILED;
|
|
break;
|
|
}
|
|
|
|
// Now try non-EV.
|
|
unsigned int keySizeOptions[] = {
|
|
MIN_RSA_BITS,
|
|
MIN_RSA_BITS_WEAK
|
|
};
|
|
|
|
KeySizeStatus keySizeStatuses[] = {
|
|
KeySizeStatus::LargeMinimumSucceeded,
|
|
KeySizeStatus::CompatibilityRisk
|
|
};
|
|
|
|
static_assert(MOZ_ARRAY_LENGTH(keySizeOptions) ==
|
|
MOZ_ARRAY_LENGTH(keySizeStatuses),
|
|
"keySize array lengths differ");
|
|
|
|
size_t keySizeOptionsCount = MOZ_ARRAY_LENGTH(keySizeStatuses);
|
|
|
|
for (size_t i = 0; i < keySizeOptionsCount && rv != Success; i++) {
|
|
for (size_t j = 0; j < sha1ModeConfigurationsCount && rv != Success;
|
|
j++) {
|
|
// Don't attempt verification if the SHA1 mode set by preferences
|
|
// (mSHA1Mode) is more restrictive than the SHA1 mode option we're on.
|
|
// (To put it another way, only attempt verification if the SHA1 mode
|
|
// option we're on is as restrictive or more restrictive than
|
|
// mSHA1Mode.) This allows us to gather telemetry information while
|
|
// still enforcing the mode set by preferences.
|
|
if (SHA1ModeMoreRestrictiveThanGivenMode(sha1ModeConfigurations[j])) {
|
|
continue;
|
|
}
|
|
|
|
NSSCertDBTrustDomain trustDomain(trustSSL, defaultOCSPFetching,
|
|
mOCSPCache, pinArg, ocspGETConfig,
|
|
mCertShortLifetimeInDays,
|
|
keySizeOptions[i],
|
|
ValidityCheckingMode::CheckingOff,
|
|
sha1ModeConfigurations[j],
|
|
mNetscapeStepUpPolicy,
|
|
originAttributes, builtChain);
|
|
rv = BuildCertChainForOneKeyUsage(trustDomain, certDER, time,
|
|
KeyUsage::digitalSignature,//(EC)DHE
|
|
KeyUsage::keyEncipherment,//RSA
|
|
KeyUsage::keyAgreement,//(EC)DH
|
|
KeyPurposeId::id_kp_serverAuth,
|
|
CertPolicyId::anyPolicy,
|
|
stapledOCSPResponse,
|
|
ocspStaplingStatus);
|
|
if (rv == Success &&
|
|
sha1ModeConfigurations[j] == SHA1Mode::ImportedRoot) {
|
|
bool isBuiltInRoot = false;
|
|
rv = IsCertChainRootBuiltInRoot(builtChain, isBuiltInRoot);
|
|
if (rv != Success) {
|
|
break;
|
|
}
|
|
if (isBuiltInRoot) {
|
|
rv = Result::ERROR_CERT_SIGNATURE_ALGORITHM_DISABLED;
|
|
}
|
|
}
|
|
if (rv == Success) {
|
|
if (keySizeStatus) {
|
|
*keySizeStatus = keySizeStatuses[i];
|
|
}
|
|
if (sha1ModeResult) {
|
|
*sha1ModeResult = sha1ModeResults[j];
|
|
}
|
|
rv = VerifySignedCertificateTimestamps(trustDomain, builtChain,
|
|
sctsFromTLSInput, time,
|
|
ctInfo);
|
|
if (rv != Success) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (rv == Success) {
|
|
break;
|
|
}
|
|
|
|
if (keySizeStatus) {
|
|
*keySizeStatus = KeySizeStatus::AlreadyBad;
|
|
}
|
|
// The telemetry probe CERT_CHAIN_SHA1_POLICY_STATUS gives us feedback on
|
|
// the result of setting a specific policy. However, we don't want noise
|
|
// from users who have manually set the policy to something other than the
|
|
// default, so we only collect for ImportedRoot (which is the default).
|
|
if (sha1ModeResult && mSHA1Mode == SHA1Mode::ImportedRoot) {
|
|
*sha1ModeResult = SHA1ModeResult::Failed;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case certificateUsageSSLCA: {
|
|
NSSCertDBTrustDomain trustDomain(trustSSL, defaultOCSPFetching,
|
|
mOCSPCache, pinArg, ocspGETConfig,
|
|
mCertShortLifetimeInDays,
|
|
MIN_RSA_BITS_WEAK,
|
|
ValidityCheckingMode::CheckingOff,
|
|
SHA1Mode::Allowed, mNetscapeStepUpPolicy,
|
|
originAttributes, builtChain);
|
|
rv = BuildCertChain(trustDomain, certDER, time,
|
|
EndEntityOrCA::MustBeCA, KeyUsage::keyCertSign,
|
|
KeyPurposeId::id_kp_serverAuth,
|
|
CertPolicyId::anyPolicy, stapledOCSPResponse);
|
|
break;
|
|
}
|
|
|
|
case certificateUsageEmailSigner: {
|
|
NSSCertDBTrustDomain trustDomain(trustEmail, defaultOCSPFetching,
|
|
mOCSPCache, pinArg, ocspGETConfig,
|
|
mCertShortLifetimeInDays,
|
|
MIN_RSA_BITS_WEAK,
|
|
ValidityCheckingMode::CheckingOff,
|
|
SHA1Mode::Allowed,
|
|
NetscapeStepUpPolicy::NeverMatch,
|
|
originAttributes, builtChain);
|
|
rv = BuildCertChain(trustDomain, certDER, time,
|
|
EndEntityOrCA::MustBeEndEntity,
|
|
KeyUsage::digitalSignature,
|
|
KeyPurposeId::id_kp_emailProtection,
|
|
CertPolicyId::anyPolicy, stapledOCSPResponse);
|
|
if (rv == Result::ERROR_INADEQUATE_KEY_USAGE) {
|
|
rv = BuildCertChain(trustDomain, certDER, time,
|
|
EndEntityOrCA::MustBeEndEntity,
|
|
KeyUsage::nonRepudiation,
|
|
KeyPurposeId::id_kp_emailProtection,
|
|
CertPolicyId::anyPolicy, stapledOCSPResponse);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case certificateUsageEmailRecipient: {
|
|
// TODO: The higher level S/MIME processing should pass in which key
|
|
// usage it is trying to verify for, and base its algorithm choices
|
|
// based on the result of the verification(s).
|
|
NSSCertDBTrustDomain trustDomain(trustEmail, defaultOCSPFetching,
|
|
mOCSPCache, pinArg, ocspGETConfig,
|
|
mCertShortLifetimeInDays,
|
|
MIN_RSA_BITS_WEAK,
|
|
ValidityCheckingMode::CheckingOff,
|
|
SHA1Mode::Allowed,
|
|
NetscapeStepUpPolicy::NeverMatch,
|
|
originAttributes, builtChain);
|
|
rv = BuildCertChain(trustDomain, certDER, time,
|
|
EndEntityOrCA::MustBeEndEntity,
|
|
KeyUsage::keyEncipherment, // RSA
|
|
KeyPurposeId::id_kp_emailProtection,
|
|
CertPolicyId::anyPolicy, stapledOCSPResponse);
|
|
if (rv == Result::ERROR_INADEQUATE_KEY_USAGE) {
|
|
rv = BuildCertChain(trustDomain, certDER, time,
|
|
EndEntityOrCA::MustBeEndEntity,
|
|
KeyUsage::keyAgreement, // ECDH/DH
|
|
KeyPurposeId::id_kp_emailProtection,
|
|
CertPolicyId::anyPolicy, stapledOCSPResponse);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case certificateUsageObjectSigner: {
|
|
NSSCertDBTrustDomain trustDomain(trustObjectSigning, defaultOCSPFetching,
|
|
mOCSPCache, pinArg, ocspGETConfig,
|
|
mCertShortLifetimeInDays,
|
|
MIN_RSA_BITS_WEAK,
|
|
ValidityCheckingMode::CheckingOff,
|
|
SHA1Mode::Allowed,
|
|
NetscapeStepUpPolicy::NeverMatch,
|
|
originAttributes, builtChain);
|
|
rv = BuildCertChain(trustDomain, certDER, time,
|
|
EndEntityOrCA::MustBeEndEntity,
|
|
KeyUsage::digitalSignature,
|
|
KeyPurposeId::id_kp_codeSigning,
|
|
CertPolicyId::anyPolicy, stapledOCSPResponse);
|
|
break;
|
|
}
|
|
|
|
case certificateUsageVerifyCA:
|
|
case certificateUsageStatusResponder: {
|
|
// XXX This is a pretty useless way to verify a certificate. It is used
|
|
// by the certificate viewer UI. Because we don't know what trust bit is
|
|
// interesting, we just try them all.
|
|
mozilla::pkix::EndEntityOrCA endEntityOrCA;
|
|
mozilla::pkix::KeyUsage keyUsage;
|
|
KeyPurposeId eku;
|
|
if (usage == certificateUsageVerifyCA) {
|
|
endEntityOrCA = EndEntityOrCA::MustBeCA;
|
|
keyUsage = KeyUsage::keyCertSign;
|
|
eku = KeyPurposeId::anyExtendedKeyUsage;
|
|
} else {
|
|
endEntityOrCA = EndEntityOrCA::MustBeEndEntity;
|
|
keyUsage = KeyUsage::digitalSignature;
|
|
eku = KeyPurposeId::id_kp_OCSPSigning;
|
|
}
|
|
|
|
NSSCertDBTrustDomain sslTrust(trustSSL, defaultOCSPFetching, mOCSPCache,
|
|
pinArg, ocspGETConfig, mCertShortLifetimeInDays,
|
|
MIN_RSA_BITS_WEAK,
|
|
ValidityCheckingMode::CheckingOff,
|
|
SHA1Mode::Allowed,
|
|
NetscapeStepUpPolicy::NeverMatch,
|
|
originAttributes, builtChain);
|
|
rv = BuildCertChain(sslTrust, certDER, time, endEntityOrCA,
|
|
keyUsage, eku, CertPolicyId::anyPolicy,
|
|
stapledOCSPResponse);
|
|
if (rv == Result::ERROR_UNKNOWN_ISSUER) {
|
|
NSSCertDBTrustDomain emailTrust(trustEmail, defaultOCSPFetching,
|
|
mOCSPCache, pinArg, ocspGETConfig,
|
|
mCertShortLifetimeInDays,
|
|
MIN_RSA_BITS_WEAK,
|
|
ValidityCheckingMode::CheckingOff,
|
|
SHA1Mode::Allowed,
|
|
NetscapeStepUpPolicy::NeverMatch,
|
|
originAttributes, builtChain);
|
|
rv = BuildCertChain(emailTrust, certDER, time, endEntityOrCA,
|
|
keyUsage, eku, CertPolicyId::anyPolicy,
|
|
stapledOCSPResponse);
|
|
if (rv == Result::ERROR_UNKNOWN_ISSUER) {
|
|
NSSCertDBTrustDomain objectSigningTrust(trustObjectSigning,
|
|
defaultOCSPFetching, mOCSPCache,
|
|
pinArg, ocspGETConfig,
|
|
mCertShortLifetimeInDays,
|
|
MIN_RSA_BITS_WEAK,
|
|
ValidityCheckingMode::CheckingOff,
|
|
SHA1Mode::Allowed,
|
|
NetscapeStepUpPolicy::NeverMatch,
|
|
originAttributes, builtChain);
|
|
rv = BuildCertChain(objectSigningTrust, certDER, time,
|
|
endEntityOrCA, keyUsage, eku,
|
|
CertPolicyId::anyPolicy, stapledOCSPResponse);
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
rv = Result::FATAL_ERROR_INVALID_ARGS;
|
|
}
|
|
|
|
if (rv != Success) {
|
|
return rv;
|
|
}
|
|
|
|
return Success;
|
|
}
|
|
|
|
Result
|
|
CertVerifier::VerifySSLServerCert(const UniqueCERTCertificate& peerCert,
|
|
/*optional*/ const SECItem* stapledOCSPResponse,
|
|
/*optional*/ const SECItem* sctsFromTLS,
|
|
Time time,
|
|
/*optional*/ void* pinarg,
|
|
const char* hostname,
|
|
/*out*/ UniqueCERTCertList& builtChain,
|
|
/*optional*/ bool saveIntermediatesInPermanentDatabase,
|
|
/*optional*/ Flags flags,
|
|
/*optional*/ const NeckoOriginAttributes& originAttributes,
|
|
/*optional out*/ SECOidTag* evOidPolicy,
|
|
/*optional out*/ OCSPStaplingStatus* ocspStaplingStatus,
|
|
/*optional out*/ KeySizeStatus* keySizeStatus,
|
|
/*optional out*/ SHA1ModeResult* sha1ModeResult,
|
|
/*optional out*/ CertificateTransparencyInfo* ctInfo)
|
|
{
|
|
PR_ASSERT(peerCert);
|
|
// XXX: PR_ASSERT(pinarg)
|
|
PR_ASSERT(hostname);
|
|
PR_ASSERT(hostname[0]);
|
|
|
|
if (evOidPolicy) {
|
|
*evOidPolicy = SEC_OID_UNKNOWN;
|
|
}
|
|
|
|
if (!hostname || !hostname[0]) {
|
|
return Result::ERROR_BAD_CERT_DOMAIN;
|
|
}
|
|
|
|
// CreateCertErrorRunnable assumes that CheckCertHostname is only called
|
|
// if VerifyCert succeeded.
|
|
Result rv = VerifyCert(peerCert.get(), certificateUsageSSLServer, time,
|
|
pinarg, hostname, builtChain, flags,
|
|
stapledOCSPResponse, sctsFromTLS, originAttributes,
|
|
evOidPolicy, ocspStaplingStatus, keySizeStatus,
|
|
sha1ModeResult, ctInfo);
|
|
if (rv != Success) {
|
|
return rv;
|
|
}
|
|
|
|
Input peerCertInput;
|
|
rv = peerCertInput.Init(peerCert->derCert.data, peerCert->derCert.len);
|
|
if (rv != Success) {
|
|
return rv;
|
|
}
|
|
|
|
Input stapledOCSPResponseInput;
|
|
Input* responseInputPtr = nullptr;
|
|
if (stapledOCSPResponse) {
|
|
rv = stapledOCSPResponseInput.Init(stapledOCSPResponse->data,
|
|
stapledOCSPResponse->len);
|
|
if (rv != Success) {
|
|
// The stapled OCSP response was too big.
|
|
return Result::ERROR_OCSP_MALFORMED_RESPONSE;
|
|
}
|
|
responseInputPtr = &stapledOCSPResponseInput;
|
|
}
|
|
|
|
if (!(flags & FLAG_TLS_IGNORE_STATUS_REQUEST)) {
|
|
rv = CheckTLSFeaturesAreSatisfied(peerCertInput, responseInputPtr);
|
|
if (rv != Success) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
Input hostnameInput;
|
|
rv = hostnameInput.Init(BitwiseCast<const uint8_t*, const char*>(hostname),
|
|
strlen(hostname));
|
|
if (rv != Success) {
|
|
return Result::FATAL_ERROR_INVALID_ARGS;
|
|
}
|
|
bool isBuiltInRoot;
|
|
rv = IsCertChainRootBuiltInRoot(builtChain, isBuiltInRoot);
|
|
if (rv != Success) {
|
|
return rv;
|
|
}
|
|
BRNameMatchingPolicy nameMatchingPolicy(
|
|
isBuiltInRoot ? mNameMatchingMode
|
|
: BRNameMatchingPolicy::Mode::DoNotEnforce);
|
|
rv = CheckCertHostname(peerCertInput, hostnameInput, nameMatchingPolicy);
|
|
if (rv != Success) {
|
|
// Treat malformed name information as a domain mismatch.
|
|
if (rv == Result::ERROR_BAD_DER) {
|
|
return Result::ERROR_BAD_CERT_DOMAIN;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
if (saveIntermediatesInPermanentDatabase) {
|
|
SaveIntermediateCerts(builtChain);
|
|
}
|
|
|
|
return Success;
|
|
}
|
|
|
|
} } // namespace mozilla::psm
|