The MITRE CVE dictionary describes this issue as:
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 21 and earlier and 6 Update 45 and earlier; the Oracle JRockit component in Oracle Fusion Middleware R27.7.5 and earlier and R28.2.7 and earlier; and OpenJDK 7 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to Libraries. NOTE: the previous information is from the June and July 2013 CPU. Oracle has not commented on claims from another vendor that this issue allows remote attackers to bypass verification of XML signatures via vectors related to a "Missing check for [a] valid DOMCanonicalizationMethod canonicalization algorithm."
Find out more about CVE-2013-2461 from the
MITRE CVE dictionary dictionary and