<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200611-09"> <title>libpng: Denial of service</title> <synopsis> A vulnerability in libpng may allow a remote attacker to crash applications that handle untrusted images. </synopsis> <product type="ebuild">libpng</product> <announced>2006-11-17</announced> <revised count="01">2006-11-17</revised> <bug>154380</bug> <access>remote</access> <affected> <package name="media-libs/libpng" auto="yes" arch="*"> <unaffected range="ge">1.2.13</unaffected> <vulnerable range="lt">1.2.13</vulnerable> </package> </affected> <background> <p> libpng is a free ANSI C library used to process and manipulate PNG images. </p> </background> <description> <p> 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. </p> </description> <impact type="normal"> <p> A remote attacker could craft an image that when processed or viewed by an application using libpng causes the application to terminate abnormally. </p> </impact> <workaround> <p> There is no known workaround at this time. </p> </workaround> <resolution> <p> All libpng users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=media-libs/libpng-1.2.13"</code> </resolution> <references> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5793">CVE-2006-5793</uri> </references> <metadata tag="submitter" timestamp="2006-11-10T11:17:04Z"> taviso </metadata> <metadata tag="bugReady" timestamp="2006-11-16T15:07:26Z"> vorlon </metadata> </glsa>