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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200709-09">
<title>GNU Tar: Directory traversal vulnerability</title>
<synopsis>
A directory traversal vulnerability has been discovered in GNU Tar.
</synopsis>
<product type="ebuild">tar</product>
<announced>September 15, 2007</announced>
<revised>September 15, 2007: 01</revised>
<bug>189682</bug>
<access>remote</access>
<affected>
<package name="app-arch/tar" auto="yes" arch="*">
<unaffected range="ge">1.18-r2</unaffected>
<vulnerable range="lt">1.18-r2</vulnerable>
</package>
</affected>
<background>
<p>
The GNU Tar program provides the ability to create tar archives, as
well as various other kinds of manipulation.
</p>
</background>
<description>
<p>
Dmitry V. Levin discovered a directory traversal vulnerability in the
contains_dot_dot() function in file src/names.c.
</p>
</description>
<impact type="normal">
<p>
By enticing a user to extract a specially crafted tar archive, a remote
attacker could extract files to arbitrary locations outside of the
specified directory with the permissions of the user running GNU Tar.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All GNU Tar users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/tar-1.18-r2"</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4131">CVE-2007-4131</uri>
</references>
<metadata tag="submitter" timestamp="Thu, 13 Sep 2007 18:11:35 +0000">
mfleming
</metadata>
<metadata tag="bugReady" timestamp="Thu, 13 Sep 2007 18:49:13 +0000">
mfleming
</metadata>
</glsa>
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