The remote host is vulnerable to a Denial of Service (DoS) attack.
The remote host is running CFNetwork prior to 129.20. CFNetwork is an API for Mac OS X users that allows an abstraction of common network protocols. This version of CFNetwork is prone to a Denial of Service (DoS) flaw. An attacker exploiting this flaw would be able to crash the application utilizing CFNetwork.
Upgrade to version 129.20 or higher.