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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200706-09">
<title>libexif: Buffer overflow</title>
libexif does not properly handle image EXIF information, possibly allowing
for the execution of arbitrary code.
<product type="ebuild">libexif</product>
<announced>June 26, 2007</announced>
<revised>June 26, 2007: 01</revised>
<package name="media-libs/libexif" auto="yes" arch="*">
<unaffected range="ge">0.6.16</unaffected>
<vulnerable range="lt">0.6.16</vulnerable>
libexif is a library for parsing, editing and saving EXIF metadata from
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.
<impact type="normal">
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.
There is no known workaround at this time.
All libexif users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=media-libs/libexif-0.6.16&quot;</code>
<uri link="">CVE-2006-4168</uri>
<metadata tag="requester" timestamp="Sat, 16 Jun 2007 06:17:21 +0000">
<metadata tag="bugReady" timestamp="Sat, 16 Jun 2007 06:17:44 +0000">
<metadata tag="submitter" timestamp="Tue, 19 Jun 2007 02:58:18 +0000">