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