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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200506-16">
<title>cpio: Directory traversal vulnerability</title>
<synopsis>
cpio contains a flaw which may allow a specially crafted cpio archive to
extract files to an arbitrary directory.
</synopsis>
<product type="ebuild">cpio</product>
<announced>June 20, 2005</announced>
<revised>June 20, 2005: 01</revised>
<bug>90619</bug>
<access>local</access>
<affected>
<package name="app-arch/cpio" auto="yes" arch="*">
<unaffected range="ge">2.6-r3</unaffected>
<vulnerable range="lt">2.6-r3</vulnerable>
</package>
</affected>
<background>
<p>
cpio is a file archival tool which can also read and write tar
files.
</p>
</background>
<description>
<p>
A vulnerability has been found in cpio that can potentially allow
a cpio archive to extract its files to an arbitrary directory of the
creator's choice.
</p>
</description>
<impact type="normal">
<p>
An attacker could create a malicious cpio archive which would
create files in arbitrary locations on the victim's system. This issue
could also be used in conjunction with a previous race condition
vulnerability (CAN-2005-1111) to change permissions on files owned by
the victim.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All cpio users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=app-arch/cpio-2.6-r3&quot;</code>
</resolution>
<references>
<uri link="http://www.securityfocus.com/archive/1/396429">Original Advisory</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1111">CAN-2005-1111</uri>
</references>
<metadata tag="requester" timestamp="Tue, 03 May 2005 21:22:45 +0000">
jaervosz
</metadata>
<metadata tag="submitter" timestamp="Thu, 05 May 2005 15:24:08 +0000">
lewk
</metadata>
<metadata tag="bugReady" timestamp="Sun, 19 Jun 2005 20:39:43 +0000">
jaervosz
</metadata>
</glsa>