From ae1bd20a2d4d7b7d64edc3b06d7f901c05175b7d 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>
(cherry picked from commit b0404f80577de9ff69e58390c6f6ef949fdb0139)
---
 .../source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx      | 6 ++++++
 xmlsecurity/source/xmlsec/nss/xmlsignature_nssimpl.cxx      | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx b/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx
index db400e6..39f9d7f 100644
--- a/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx
+++ b/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx
@@ -21,6 +21,8 @@
 #include <sal/log.hxx>
 #include <rtl/uuid.h>
 
+#include <xmlsec/mscng/x509.h>
+
 #include <com/sun/star/xml/crypto/SecurityOperationStatus.hpp>
 #include <com/sun/star/xml/crypto/XXMLSignature.hpp>
 
@@ -229,6 +231,10 @@ 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 827580b..8f4d6f8 100644
--- a/xmlsecurity/source/xmlsec/nss/xmlsignature_nssimpl.cxx
+++ b/xmlsecurity/source/xmlsec/nss/xmlsignature_nssimpl.cxx
@@ -19,6 +19,8 @@
 
 #include <sal/config.h>
 
+#include <xmlsec/nss/x509.h>
+
 #include <xmlelementwrapper_xmlsecimpl.hxx>
 #include <xmlsec/xmlstreamio.hxx>
 #include <xmlsec/errorcallback.hxx>
@@ -243,6 +245,10 @@ 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 );
 
-- 
2.33.1