CVE-2013-2156: Apache Santuario XML Security for C++ contains heap overflow while processing InclusiveNamespace PrefixList Severity: Critical Vendor: The Apache Software Foundation Versions Affected: Apache Santuario XML Security for C++ library versions prior to V1.7.1 Description: A heap overflow exists in the processing of the PrefixList attribute optionally used in conjunction with Exclusive Canonicalization, potentially allowing arbitary code execution. If verification of the signature occurs prior to actual evaluation of a signing key, this could be exploited by an unauthenticated attacker. Mitigation: Applications using library versions older than V1.7.1 should upgrade as soon as possible. Distributors of older versions should apply the patches from this subversion revision: http://svn.apache.org/viewvc?view=revision&revision=1493961 Applications that prevent the use of Exclusive Canonicalization through the examination of signature content prior to verification are immune to this issue. Credit: This issue was reported by James Forshaw, Context Information Security References: http://santuario.apache.org/