77 lines
2.7 KiB
XML
77 lines
2.7 KiB
XML
<?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="200710-11">
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<title>X Font Server: Multiple Vulnerabilities</title>
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<synopsis>
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Three vulnerabilities have been discovered in the X Font Server possibly
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allowing local attackers to gain elevated privileges.
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</synopsis>
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<product type="ebuild">xfs</product>
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<announced>October 12, 2007</announced>
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<revised>October 12, 2007: 01</revised>
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<bug>185660</bug>
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<bug>194606</bug>
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<access>local</access>
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<affected>
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<package name="x11-apps/xfs" auto="yes" arch="*">
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<unaffected range="ge">1.0.5</unaffected>
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<vulnerable range="lt">1.0.5</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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The X.Org X11 X Font Server provides a standard mechanism for an X
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server to communicate with a font renderer.
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</p>
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</background>
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<description>
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<p>
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iDefense reported that the xfs init script does not correctly handle a
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race condition when setting permissions of a temporary file
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(CVE-2007-3103). Sean Larsson discovered an integer overflow
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vulnerability in the build_range() function possibly leading to a
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heap-based buffer overflow when handling "QueryXBitmaps" and
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"QueryXExtents" protocol requests (CVE-2007-4568). Sean Larsson also
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discovered an error in the swap_char2b() function possibly leading to a
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heap corruption when handling the same protocol requests
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(CVE-2007-4990).
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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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The first issue would allow a local attacker to change permissions of
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arbitrary files to be world-writable by performing a symlink attack.
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The second and third issues would allow a local attacker to execute
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arbitrary code with privileges of the user running the X Font Server,
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usually xfs.
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</p>
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</impact>
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<workaround>
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<p>
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There is no known workaround at this time.
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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 X Font Server 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-apps/xfs-1.0.5"</code>
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</resolution>
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<references>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3103">CVE-2007-3103</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4568">CVE-2007-4568</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4990">CVE-2007-4990</uri>
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</references>
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<metadata tag="requester" timestamp="Thu, 11 Oct 2007 20:30:03 +0000">
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rbu
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</metadata>
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<metadata tag="submitter" timestamp="Thu, 11 Oct 2007 21:39:17 +0000">
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rbu
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</metadata>
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<metadata tag="bugReady" timestamp="Thu, 11 Oct 2007 21:39:34 +0000">
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rbu
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</metadata>
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</glsa>
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