70 lines
2.6 KiB
XML
70 lines
2.6 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="201201-16">
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<title>X.Org X Server/X Keyboard Configuration Database: Screen lock bypass</title>
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<synopsis>A debugging functionality in the X.Org X Server that is bound to a
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hotkey by default can be used by local attackers to circumvent screen
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locking utilities.
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</synopsis>
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<product type="ebuild">xkeyboard-config xorg-server</product>
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<announced>2012-01-27</announced>
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<revised count="1">2012-01-27</revised>
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<bug>399347</bug>
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<access>local</access>
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<affected>
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<package name="x11-misc/xkeyboard-config" auto="yes" arch="amd64 arm hppa x86">
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<unaffected range="ge">2.4.1-r3</unaffected>
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<vulnerable range="lt">2.4.1-r3</vulnerable>
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</package>
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</affected>
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<background>
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<p>The X Keyboard Configuration Database provides keyboard configuration
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for various X server implementations.
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</p>
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</background>
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<description>
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<p>Starting with the =x11-base/xorg-server-1.11 package, the X.Org X Server
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again provides debugging functionality that can be used terminate an
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application that exclusively grabs mouse and keyboard input, like screen
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locking utilities.
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</p>
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<p>Gu1 reported that the X Keyboard Configuration Database maps this
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functionality by default to the Ctrl+Alt+Numpad * key combination.
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</p>
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</description>
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<impact type="normal">
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<p>A physically proximate attacker could exploit this vulnerability to gain
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access to a locked X session without providing the correct credentials.
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</p>
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</impact>
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<workaround>
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<p>Downgrade to any version of x11-base/xorg-server below
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x11-base/xorg-server-1.11:
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</p>
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<code>
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# emerge --oneshot --verbose "<x11-base/xorg-server-1.11"
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</code>
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</workaround>
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<resolution>
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<p>All xkeyboard-config users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose
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">=x11-misc/xkeyboard-config-2.4.1-r3"
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</code>
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<p>NOTE: The X.Org X Server 1.11 was only stable on the AMD64, ARM, HPPA,
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and x86 architectures. Users of the stable branches of all other
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architectures are not affected and will be directly provided with a fixed
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X Keyboard Configuration Database version.
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</p>
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</resolution>
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<references>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0064">CVE-2012-0064</uri>
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</references>
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<metadata timestamp="2012-01-19T17:45:40Z" tag="requester">a3li</metadata>
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<metadata timestamp="2012-01-27T20:35:28Z" tag="submitter">a3li</metadata>
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</glsa>
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