Multiple integer overflows in src/image.c in Ziproxy before 3.0.1 allow remote attackers to execute arbitrary code via (1) a large JPG image, related to the jpg2bitmap function or (2) a large PNG image, related to the png2bitmap function, leading to heap-based buffer overflows.
http://ziproxy.sourceforge.net/#news
http://www.securityfocus.com/archive/1/511424/100/0/threaded