ColorSync on Mac OS X 10.3.7 and 10.3.8 allows attackers to execute arbitrary code via malformed ICC color profiles that modify the heap.
https://exchange.xforce.ibmcloud.com/vulnerabilities/19083
http://www.securityfocus.com/bid/12367
http://www.kb.cert.org/vuls/id/980078
http://securitytracker.com/id?1013000
http://lists.apple.com/archives/security-announce/2005/Jan/msg00001.html