A vulnerability has been reported in libpng, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to the library using large amount of CPU and memory resources when processing certain highly compressed ancillary chunks, which can be exploited to cause a DoS by tricking an application using the library into processing a specially crafted PNG file.

The vulnerability is reported in versions prior to 1.0.53, 1.2.43, and 1.4.1.

Solution
Update to version 1.0.53, 1.2.43, and 1.4.1 and follow the vendor's instructions to increase protection against the so called "decompression bombs":
Further details available to Secunia VIM customers

Provided and/or discovered by
Reported by the PNG Development Group after encountering a malformed image in the wild.

Original Advisory
http://libpng.sourceforge.net/ADVISORY-1.4.1.html
http://libpng.sourceforge.net/decompression_bombs.html

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers