<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200609-07"> <title>LibXfont, monolithic X.org: Multiple integer overflows</title> <synopsis> Some buffer overflows were discovered in the CID font parser, potentially resulting in the execution of arbitrary code with elevated privileges. </synopsis> <product type="ebuild">libxfont</product> <announced>2006-09-13</announced> <revised count="01">2006-09-13</revised> <bug>145513</bug> <access>local and remote</access> <affected> <package name="x11-libs/libXfont" auto="yes" arch="*"> <unaffected range="ge">1.2.1</unaffected> <vulnerable range="lt">1.2.1</vulnerable> </package> <package name="x11-base/xorg-x11" auto="yes" arch="*"> <unaffected range="ge">7.0</unaffected> <vulnerable range="lt">7.0</vulnerable> </package> </affected> <background> <p> libXfont is the X.Org Xfont library, some parts are based on the FreeType code base. </p> </background> <description> <p> Several integer overflows have been found in the CID font parser. </p> </description> <impact type="high"> <p> A remote attacker could exploit this vulnerability by enticing a user to load a malicious font file resulting in the execution of arbitrary code with the permissions of the user running the X server which typically is the root user. A local user could exploit this vulnerability to gain elevated privileges. </p> </impact> <workaround> <p> Disable CID-encoded Type 1 fonts by removing the "type1" module and replacing it with the "freetype" module in xorg.conf. </p> </workaround> <resolution> <p> All libXfont users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=x11-libs/libXfont-1.2.1"</code> <p> All monolithic X.org users are advised to migrate to modular X.org. </p> </resolution> <references> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=2006-3739">CVE-2006-3739</uri> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=2006-3740">CVE-2006-3740</uri> </references> <metadata tag="requester" timestamp="2006-09-12T16:30:32Z"> frilled </metadata> <metadata tag="submitter" timestamp="2006-09-12T18:16:51Z"> jaervosz </metadata> <metadata tag="bugReady" timestamp="2006-09-13T08:07:36Z"> jaervosz </metadata> </glsa>