Mandriva Linux Security Advisory – Thomas Pollet discovered an integer overflow vulnerability in the PNG image handling filter in CUPS. This could allow a malicious user to execute arbitrary code with the privileges of the user running CUPS, or cause a denial of service by sending a specially crafted PNG image to the print server. The updated packages have been patched to correct this issue.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/69087/MDVSA-2008-170.txt
Source: https://packetstormsecurity.com/files/69087/Mandriva-Linux-Security-Advisory-2008-170.html