[-] Product Information Trillian is a fully featured, stand-alone, skinnable chat client that supports AIM, ICQ, MSN, Yahoo Messenger, and IRC.
[-] Vulnerability Description Trillian contains a buffer overflow vulnerability in the way it parse PNG Images
[-] Exploit Proof of concept exploit code is available at http://www.hackingdefined.com/exploits/trillian3.tar.gz
[-] Exploitation Analysis When triggering this vulnerability the return address is overwritten and the ESP register points to user-controlled data by crafting a malformed structure its possible to execute arbitrary code The structrue is as follows [Malformed PNG Header][shellcode][New return address][get back shellcode]
[-] Credits The vulnerability was discovered and exploited by Tal zeltzer