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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200610-03">
<title>ncompress: Buffer Underflow</title>
<synopsis>
A buffer underflow vulnerability has been reported in ncompress allowing
for the execution of arbitrary code.
</synopsis>
<product type="ebuild">ncompress</product>
<announced>October 06, 2006</announced>
<revised>October 06, 2006: 01</revised>
<bug>141728</bug>
<access>remote</access>
<affected>
<package name="app-arch/ncompress" auto="yes" arch="*">
<unaffected range="ge">4.2.4.1</unaffected>
<vulnerable range="lt">4.2.4.1</vulnerable>
</package>
</affected>
<background>
<p>
ncompress is a suite of utilities to create and extract
Lempel-Ziff-Welch (LZW) compressed archives.
</p>
</background>
<description>
<p>
Tavis Ormandy of the Google Security Team discovered a static buffer
underflow in ncompress.
</p>
</description>
<impact type="normal">
<p>
An attacker could create a specially crafted LZW archive, that when
decompressed by a user or automated system would result in the
execution of arbitrary code with the permissions of the user invoking
the utility.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All ncompress users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=app-arch/ncompress-4.2.4.1&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1168">CVE-2006-1168</uri>
</references>
<metadata tag="requester" timestamp="Fri, 29 Sep 2006 14:20:45 +0000">
vorlon078
</metadata>
<metadata tag="submitter" timestamp="Mon, 02 Oct 2006 10:06:04 +0000">
taviso
</metadata>
<metadata tag="bugReady" timestamp="Fri, 06 Oct 2006 17:50:24 +0000">
falco
</metadata>
</glsa>