The default protocol helper for the disk: URI on Mac OS X 10.3.3 and 10.2.8 allows remote attackers to write arbitrary files by causing a disk image file (.dmg) to be mounted as a disk volume.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16166
http://www.kb.cert.org/vuls/id/210606
http://secunia.com/advisories/11622/
http://lists.seifried.org/pipermail/security/2004-May/003743.html
http://lists.apple.com/mhonarc/security-announce/msg00053.html