The XML digital signature functionality (xsec/dsig/DSIGReference.cpp) in Apache Santuario XML Security for C++ (aka xml-security-c) before 1.7.1 allows context-dependent attackers to reuse signatures and spoof arbitrary content via crafted Reference elements in the Signature, aka "XML Signature Bypass issue."

Stack-based buffer overflow in the XML Signature Reference functionality (xsec/dsig/DSIGReference.cpp) in Apache Santuario XML Security for C++ (aka xml-security-c) before 1.7.1 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via malformed XPointer expressions, probably related to the DSIGReference::getURIBaseTXFM function.

Heap-based buffer overflow in the Exclusive Canonicalization functionality (xsec/canon/XSECC14n20010315.cpp) in Apache Santuario XML Security for C++ (aka xml-security-c) before 1.7.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted PrefixList attribute.

Heap-based buffer overflow in the XML Signature Reference functionality in Apache Santuario XML Security for C++ (aka xml-security-c) before 1.7.2 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via malformed XPointer expressions. NOTE: this is due to an incorrect fix for CVE-2013-2154.

Apache Santuario XML Security for C++ (aka xml-security-c) before 1.7.1 does not properly validate length values, which allows remote attackers to cause a denial of service or bypass the CVE-2009-0217 protection mechanism and spoof a signature via crafted length values to the (1) compareBase64StringToRaw, (2) DSIGAlgorithmHandlerDefault, or (3) DSIGAlgorithmHandlerDefault::verify functions.

Off-by-one error in the XML signature feature in Apache XML Security for C++ 1.6.0, as used in Shibboleth before 2.4.3 and possibly other products, allows remote attackers to cause a denial of service (crash) via a signature using a large RSA key, which triggers a buffer overflow.