[SA22900] libpng sPLT Chunk Handling Denial of Service

Type securityvulns
Reporter Securityvulns
Modified 2006-11-16T00:00:00


TITLE: libpng sPLT Chunk Handling Denial of Service


VERIFY ADVISORY: http://secunia.com/advisories/22900/

CRITICAL: Less critical


WHERE: >From remote

SOFTWARE: libpng 1.x http://secunia.com/product/3439/

DESCRIPTION: Tavis Ormandy has reported a vulnerability in libpng, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an out-of-bounds read error in the "png_set_sPLT()" function in pngset.c. This can be exploited by tricking an application using the library to process a specially crafted PNG file.

The vulnerability is reported in version 1.2.12. Other versions may also be affected.

SOLUTION: Do not open untrusted PNG files.

PROVIDED AND/OR DISCOVERED BY: Tavis Ormandy, Gentoo Linux Security Auditing Team.

ORIGINAL ADVISORY: http://bugs.gentoo.org/show_bug.cgi?id=154380

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