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70 lines
2.3 KiB
70 lines
2.3 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="200711-16">
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<title>CUPS: Memory corruption</title>
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<synopsis>
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CUPS contains a boundary checking error that might lead to the execution of
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arbitrary code.
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</synopsis>
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<product type="ebuild">cups</product>
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<announced>November 12, 2007</announced>
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<revised>November 12, 2007: 01</revised>
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<bug>196736</bug>
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<access>remote</access>
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<affected>
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<package name="net-print/cups" auto="yes" arch="*">
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<unaffected range="ge">1.2.12-r2</unaffected>
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<vulnerable range="lt">1.2.12-r2</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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CUPS provides a portable printing layer for UNIX-based operating
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systems.
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</p>
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</background>
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<description>
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<p>
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Alin Rad Pop (Secunia Research) discovered an off-by-one error in the
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ippReadIO() function when handling Internet Printing Protocol (IPP)
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tags that might allow to overwrite one byte on the stack.
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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 local attacker could send a specially crafted IPP request containing
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"textWithLanguage" or "nameWithLanguage" tags, leading to a Denial of
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Service or the execution of arbitrary code with the privileges of the
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"lp" user. If CUPS is configured to allow network printing, this
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vulnerability might be remotely exploitable.
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</p>
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</impact>
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<workaround>
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<p>
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To avoid remote exploitation, network access to CUPS servers on port
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631/udp should be restricted. In order to do this, update the "Listen"
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setting in cupsd.conf to "<i>Listen localhost:631</i>" or add a rule to
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the system's firewall. However, this will not avoid local users from
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exploiting this vulnerability.
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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 CUPS 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 ">=net-print/cups-1.2.12-r2"</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-2007-4351">CVE-2007-4351</uri>
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</references>
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<metadata tag="submitter" timestamp="Sun, 04 Nov 2007 00:16:24 +0000">
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rbu
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</metadata>
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<metadata tag="bugReady" timestamp="Sun, 11 Nov 2007 08:38:00 +0000">
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jaervosz
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</metadata>
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</glsa>
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