The _CFNetConnectionWillEnqueueRequests function in CFNetwork 129.19 on Apple Mac OS X 10.4 through 10.4.10 allows remote attackers to cause a denial of service (application crash) via a crafted HTTP 301 response, which results in a NULL pointer dereference.
https://www.exploit-db.com/exploits/3200
https://exchange.xforce.ibmcloud.com/vulnerabilities/31837
http://www.vupen.com/english/advisories/2007/3868
http://www.us-cert.gov/cas/techalerts/TA07-319A.html
http://www.securityfocus.com/bid/26444
http://www.securityfocus.com/bid/22249
http://secunia.com/advisories/27643
http://lists.apple.com/archives/security-announce/2007/Nov/msg00002.html