CoreAudio in Apple Mac OS X before 10.6.3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via crafted audio content with QDM2 encoding, which triggers a buffer overflow due to inconsistent length fields, related to QDCA.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6922
http://www.zerodayinitiative.com/advisories/ZDI-10-041
http://www.securityfocus.com/archive/1/510517/100/0/threaded
http://support.apple.com/kb/HT4077
http://lists.apple.com/archives/security-announce/2010//Mar/msg00002.html
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html