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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200402-04">
<title>Gallery 1.4.1 and below remote exploit vulnerability</title>
<synopsis>
The Gallery developers have discovered a potentially serious security flaw
in Gallery 1.3.1, 1.3.2, 1.3.3, 1.4 and 1.4.1 which can allow a
remote exploit of your webserver.
</synopsis>
<product type="ebuild">Gallery</product>
<announced>February 11, 2004</announced>
<revised>February 11, 2004: 01</revised>
<bug>39638</bug>
<access>remote</access>
<affected>
<package name="www-apps/gallery" auto="yes" arch="*">
<unaffected range="ge">1.4.1_p1</unaffected>
<vulnerable range="lt">1.4.1_p1</vulnerable>
</package>
</affected>
<background>
<p>
Gallery is an open source image management system written in PHP.
More information is available at http://gallery.sourceforge.net
</p>
</background>
<description>
<p>
Starting in the 1.3.1 release, Gallery includes code to simulate the behaviour
of the PHP 'register_globals' variable in environments where that setting
is disabled. It is simulated by extracting the values of the various
$HTTP_ global variables into the global namespace.
</p>
</description>
<impact type="normal">
<p>
A crafted URL such as
http://example.com/gallery/init.php?HTTP_POST_VARS=xxx causes the
'register_globals' simulation code to overwrite the $HTTP_POST_VARS which,
when it is extracted, will deliver the given payload. If the
payload compromises $GALLERY_BASEDIR then the malicious user can perform a
PHP injection exploit and gain remote access to the webserver with PHP
user UID access rights.
</p>
</impact>
<workaround>
<p>
The workaround for the vulnerability is to replace init.php and
setup/init.php with the files in the following ZIP file:
http://prdownloads.sourceforge.net/gallery/patch_1.4.1-to-1.4.1-pl1.zip?download
</p>
</workaround>
<resolution>
<p>
All users are encouraged to upgrade their gallery installation:
</p>
<code>
# emerge sync
# emerge -p ">=www-apps/gallery-1.4.1_p1"
# emerge ">=www-apps/gallery-1.4.1_p1"</code>
</resolution>
<references>
</references>
</glsa>