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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200706-09">
<title>libexif: Buffer overflow</title>
<synopsis>
libexif does not properly handle image EXIF information, possibly allowing
for the execution of arbitrary code.
</synopsis>
<product type="ebuild">libexif</product>
<announced>June 26, 2007</announced>
<revised>June 26, 2007: 01</revised>
<bug>181922</bug>
<access>remote</access>
<affected>
<package name="media-libs/libexif" auto="yes" arch="*">
<unaffected range="ge">0.6.16</unaffected>
<vulnerable range="lt">0.6.16</vulnerable>
</package>
</affected>
<background>
<p>
libexif is a library for parsing, editing and saving EXIF metadata from
images.
</p>
</background>
<description>
<p>
iDefense Labs have discovered that the exif_data_load_data_entry()
function in libexif/exif-data.c improperly handles integer data while
working with an image with many EXIF components, allowing an integer
overflow possibly leading to a heap-based buffer overflow.
</p>
</description>
<impact type="normal">
<p>
An attacker could entice a user of an application making use of a
vulnerable version of libexif to load a specially crafted image file,
possibly resulting in a crash of the application or the execution of
arbitrary code with the rights of the user running the application.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All libexif users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libexif-0.6.16"</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4168">CVE-2006-4168</uri>
</references>
<metadata tag="requester" timestamp="Sat, 16 Jun 2007 06:17:21 +0000">
jaervosz
</metadata>
<metadata tag="bugReady" timestamp="Sat, 16 Jun 2007 06:17:44 +0000">
jaervosz
</metadata>
<metadata tag="submitter" timestamp="Tue, 19 Jun 2007 02:58:18 +0000">
shellsage
</metadata>
</glsa>
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