Netpbm: Buffer overflow in pnmtopng

Background

Netpbm is a package of 220 graphics programs and a programming library, including pnmtopng, a tool to convert PNM image files to the PNG format.

Description

RedHat reported that pnmtopng is vulnerable to a buffer overflow.

Impact

An attacker could craft a malicious PNM file and entice a user to run pnmtopng on it, potentially resulting in the execution of arbitrary code with the permissions of the user running pnmtopng.

Workaround

There is no known workaround at this time.

Resolution

All Netpbm users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose media-libs/netpbm