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From b0404f80577de9ff69e58390c6f6ef949fdb0139 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
Date: Mon, 20 Dec 2021 17:05:44 +0000
Subject: [PATCH] only use X509Data
Change-Id: I52e6588f5fac04bb26d77c1f3af470db73e41f72
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/127193
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
(cherry picked from commit be446d81e07b5499152efeca6ca23034e51ea5ff)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/127178
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
---
xmlsecurity/inc/xmlsec-wrapper.h | 4 ++++
.../source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx | 4 ++++
xmlsecurity/source/xmlsec/nss/xmlsignature_nssimpl.cxx | 4 ++++
3 files changed, 12 insertions(+)
diff --git a/xmlsecurity/inc/xmlsec-wrapper.h b/xmlsecurity/inc/xmlsec-wrapper.h
index e4048de94bf2a..cc149379c36be 100644
--- a/xmlsecurity/inc/xmlsec-wrapper.h
+++ b/xmlsecurity/inc/xmlsec-wrapper.h
@@ -43,6 +43,10 @@
#include <xmlsec/nss/app.h>
#include <xmlsec/nss/crypto.h>
#include <xmlsec/nss/pkikeys.h>
+#include <xmlsec/nss/x509.h>
+#endif
+#ifdef XMLSEC_CRYPTO_MSCRYPTO
+#include <xmlsec/mscng/x509.h>
#endif
#endif
diff --git a/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx b/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx
index d9b8b1eace680..824139464fbb8 100644
--- a/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx
+++ b/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx
@@ -233,6 +233,10 @@ SAL_CALL XMLSignature_MSCryptImpl::validate(
// We do certificate verification ourselves.
pDsigCtx->keyInfoReadCtx.flags |= XMLSEC_KEYINFO_FLAGS_X509DATA_DONT_VERIFY_CERTS;
+ // limit possible key data to valid X509 certificates only, no KeyValues
+ if (xmlSecPtrListAdd(&(pDsigCtx->keyInfoReadCtx.enabledKeyData), BAD_CAST xmlSecMSCngKeyDataX509GetKlass()) < 0)
+ throw RuntimeException("failed to limit allowed key data");
+
//Verify signature
//The documentation says that the signature is only valid if the return value is 0 (that is, not < 0)
//AND pDsigCtx->status == xmlSecDSigStatusSucceeded. That is, we must not make any assumptions, if
diff --git a/xmlsecurity/source/xmlsec/nss/xmlsignature_nssimpl.cxx b/xmlsecurity/source/xmlsec/nss/xmlsignature_nssimpl.cxx
index b41d754f74072..fde4b747e9322 100644
--- a/xmlsecurity/source/xmlsec/nss/xmlsignature_nssimpl.cxx
+++ b/xmlsecurity/source/xmlsec/nss/xmlsignature_nssimpl.cxx
@@ -247,6 +247,10 @@ SAL_CALL XMLSignature_NssImpl::validate(
// We do certificate verification ourselves.
pDsigCtx->keyInfoReadCtx.flags |= XMLSEC_KEYINFO_FLAGS_X509DATA_DONT_VERIFY_CERTS;
+ // limit possible key data to valid X509 certificates only, no KeyValues
+ if (xmlSecPtrListAdd(&(pDsigCtx->keyInfoReadCtx.enabledKeyData), BAD_CAST xmlSecNssKeyDataX509GetKlass()) < 0)
+ throw RuntimeException("failed to limit allowed key data");
+
//Verify signature
int rs = xmlSecDSigCtxVerify( pDsigCtx.get() , pNode );
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