Debian Security Advisory 571-1 – Several integer overflows have been discovered by its upstream developers in libpng, a commonly used library to display PNG graphics. They could be exploited to cause arbitrary code to be executed when a specially crafted PNG image is processed.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/34792/dsa-571.txt
Source: https://packetstormsecurity.com/files/34792/dsa-571.txt.html