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From 77f30ada1156ca1e1357776fea8e9dc113f6898d Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
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Date: Thu, 3 Mar 2022 14:22:37 +0000
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Subject: [PATCH 1/4] CVE-2022-26305 compare authors using Thumbprint
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Change-Id: I338f58eb07cbf0a3d13a7dafdaddac09252a8546
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Reviewed-on: https://gerrit.libreoffice.org/c/core/+/130929
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Tested-by: Jenkins
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Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
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(cherry picked from commit 65442205b5b274ad309308162f150f8d41648f72)
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Reviewed-on: https://gerrit.libreoffice.org/c/core/+/130866
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Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>
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(cherry picked from commit a7aaa78acea4c1d51283c2fce54ff9f5339026f8)
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---
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.../component/documentdigitalsignatures.cxx | 23 +++++++++++++++----
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1 file changed, 19 insertions(+), 4 deletions(-)
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diff --git a/xmlsecurity/source/component/documentdigitalsignatures.cxx b/xmlsecurity/source/component/documentdigitalsignatures.cxx
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index b9066ea92cac..5a21c8421bec 100644
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--- a/xmlsecurity/source/component/documentdigitalsignatures.cxx
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+++ b/xmlsecurity/source/component/documentdigitalsignatures.cxx
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@@ -19,9 +19,10 @@
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#include <resourcemanager.hxx>
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-#include <digitalsignaturesdialog.hxx>
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+#include <certificate.hxx>
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#include <certificatechooser.hxx>
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#include <certificateviewer.hxx>
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+#include <digitalsignaturesdialog.hxx>
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#include <macrosecurity.hxx>
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#include <biginteger.hxx>
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#include <strings.hrc>
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@@ -666,9 +667,23 @@ sal_Bool DocumentDigitalSignatures::isAuthorTrusted(
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Sequence< SvtSecurityOptions::Certificate > aTrustedAuthors = SvtSecurityOptions().GetTrustedAuthors();
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return std::any_of(aTrustedAuthors.begin(), aTrustedAuthors.end(),
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- [&xAuthor, &sSerialNum](const SvtSecurityOptions::Certificate& rAuthor) {
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- return xmlsecurity::EqualDistinguishedNames(rAuthor[0], xAuthor->getIssuerName())
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- && ( rAuthor[1] == sSerialNum );
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+ [this, &xAuthor, &sSerialNum](const SvtSecurityOptions::Certificate& rAuthor) {
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+ if (!xmlsecurity::EqualDistinguishedNames(rAuthor[0], xAuthor->getIssuerName()))
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+ return false;
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+ if (rAuthor[1] != sSerialNum)
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+ return false;
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+
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+ DocumentSignatureManager aSignatureManager(mxCtx, {});
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+ if (!aSignatureManager.init())
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+ return false;
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+ uno::Reference<css::security::XCertificate> xCert = aSignatureManager.getSecurityEnvironment()->createCertificateFromAscii(rAuthor[2]);
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+
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+ auto pAuthor = dynamic_cast<xmlsecurity::Certificate*>(xAuthor.get());
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+ auto pCert = dynamic_cast<xmlsecurity::Certificate*>(xCert.get());
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+ if (pAuthor && pCert)
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+ return pCert->getSHA256Thumbprint() == pAuthor->getSHA256Thumbprint();
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+
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+ return xCert->getSHA1Thumbprint() == xAuthor->getSHA1Thumbprint();
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});
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}
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--
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2.37.1
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