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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200612-05">
<title>KOffice shared libraries: Heap corruption</title>
<synopsis>
An integer overflow in koffice-libs allows for a Denial of Service and
possibly the execution of arbitrary code when viewing malicious PowerPoint
files.
</synopsis>
<product type="ebuild">koffice-libs</product>
<announced>December 10, 2006</announced>
<revised>December 10, 2006: 01</revised>
<bug>155914</bug>
<access>remote</access>
<affected>
<package name="app-office/koffice-libs" auto="yes" arch="*">
<unaffected range="ge">1.5.0</unaffected>
<vulnerable range="lt">1.5.0</vulnerable>
</package>
</affected>
<background>
<p>
KOffice is an integrated office suite for KDE. koffice-libs is a
package containing shared librares used by KOffice programs.
</p>
</background>
<description>
<p>
Kees Cook of Ubuntu discovered that 'KLaola::readBigBlockDepot()' in
klaola.cc fills 'num_of_bbd_blocks' while reading a .ppt (PowerPoint)
file without proper sanitizing, resulting in an integer overflow
subsequently overwriting the heap with parts of the file being read.
</p>
</description>
<impact type="normal">
<p>
By enticing a user to open a specially crafted PowerPoint file, an
attacker could crash the application and possibly execute arbitrary
code with the rights of the user running KOffice.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All koffice-libs users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-office/koffice-libs-1.5.0"</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6120">CVE-2006-6120</uri>
</references>
<metadata tag="requester" timestamp="Fri, 01 Dec 2006 20:55:38 +0000">
DerCorny
</metadata>
<metadata tag="submitter" timestamp="Fri, 01 Dec 2006 21:30:45 +0000">
frilled
</metadata>
<metadata tag="bugReady" timestamp="Sun, 10 Dec 2006 13:39:48 +0000">
jaervosz
</metadata>
</glsa>
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