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.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.