Secunia Security Advisory – Two vulnerabilities have been reported in libpng, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise an application using the library.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/91156/sa40302.txt
Source: https://packetstormsecurity.com/files/91156/Secunia-Security-Advisory-40302.html