[ GLSA 200611-09 ] libpng: Denial of Service

[GLSA]

Gentoo Linux Security Advisory

Title: libpng: Denial of Service (GLSA 200611-09)
Severity: normal
Exploitable: remote
Date: November 17, 2006
Bug(s): #154380
ID: 200611-09

Synopsis

A vulnerability in libpng may allow a remote attacker to crash applications that handle untrusted images.

Background

libpng is a free ANSI C library used to process and manipulate PNG images.

Affected Packages

Package: media-libs/libpng
Vulnerable: < 1.2.13
Unaffected: >= 1.2.13
Architectures: All supported architectures


Description

Tavis Ormandy of the Gentoo Linux Security Audit Team discovered that a vulnerability exists in the sPLT chunk handling code of libpng, a large sPLT chunk may cause an application to attempt to read out of bounds.

Impact

A remote attacker could craft an image that when processed or viewed by an application using libpng causes the application to terminate abnormally.

Workaround

There is no known workaround at this time.

Resolution

All libpng users should upgrade to the latest version: