gif2png command line buffer overflow

CENSUS ID:	CENSUS-2009-0006
CVE ID:	CVE-2009-5018
Affected Products:	gif2png versions ≤ 2.5.1.
Class:	Improper Input Validation (CWE-20), Failure to Constrain Operations within the Bounds of a Memory Buffer (CWE-119)
Remote:	Yes (when gif2png is used by CGI programs)
Discovered by:	Patroklos Argyroudis

We have discovered an “improper input validation” vulnerability in the gif2png utility that leads to a stack buffer overflow.