CVE-2005-3678

Google Talk before 1.0.0.76, with email notification enabled, allows remote attackers to cause a denial of service (connection reset) via email with a blank sender.

CVE-2005-3899

The automatic update feature in Google Talk allows remote attackers to cause a denial of service (CPU and memory consumption) by poisoning a target's DNS cache and causing a large update file to be sent, which consumes large amounts of CPU and memory during the signature verification, aka BenjiBug.