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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200804-06">
<title>UnZip: User-assisted execution of arbitrary code</title>
A double free vulnerability discovered in UnZip might lead to the execution
of arbitrary code.
<product type="ebuild">unzip</product>
<announced>April 06, 2008</announced>
<revised>April 06, 2008: 01</revised>
<package name="app-arch/unzip" auto="yes" arch="*">
<unaffected range="ge">5.52-r2</unaffected>
<vulnerable range="lt">5.52-r2</vulnerable>
Info-ZIP's UnZip is a tool to list and extract files inside PKZIP
compressed files.
Tavis Ormandy of the Google Security Team discovered that the NEEDBITS
macro in the inflate_dynamic() function in the file inflate.c can be
invoked using invalid buffers, which can lead to a double free.
<impact type="normal">
Remote attackers could entice a user or automated system to open a
specially crafted ZIP file that might lead to the execution of
arbitrary code or a Denial of Service.
There is no known workaround at this time.
All UnZip users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=app-arch/unzip-5.52-r2&quot;</code>
<uri link="">CVE-2008-0888</uri>
<metadata tag="requester" timestamp="Sat, 29 Mar 2008 19:46:56 +0000">
<metadata tag="submitter" timestamp="Thu, 03 Apr 2008 22:38:54 +0000">
<metadata tag="bugReady" timestamp="Thu, 03 Apr 2008 22:39:11 +0000">