CVE-2006-4408
The Security Framework in Apple Mac OS X 10.4 through 10.4.8 allows remote attackers to cause a denial of service (resource consumption) via certain public key values in an X.509 certificate that requires extra resources during signature verification. NOTE: this issue may be similar to CVE-2006-2940.
Date published : 2006-11-30
http://lists.apple.com/archives/security-announce/2006/Nov/msg00001.html