TITLE:
Gallery Script Insertion and Session Handling Vulnerabilities

SECUNIA ADVISORY ID:
SA19104

VERIFY ADVISORY:
http://secunia.com/advisories/19104/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, Cross Site Scripting, Manipulation of data

WHERE:
>From remote

SOFTWARE:
Gallery 2.x
http://secunia.com/product/5879/

DESCRIPTION:
James Bercegay has reported some vulnerabilities in Gallery, which
can be exploited by malicious people to conduct script insertion
attacks and to bypass certain security restrictions.

1) Input passed to "getRemoteHostAddress()" via the X_FORWARDED_FOR
HTTP header isn't properly sanitised before being saved. This can be
exploited to spoof the IP address that is logged when adding comments
in an album, or to execute arbitrary HTML and script code in a user's
browser session in context of an affected website when a malicious
comment is viewed.

2) Input passed in the session id isn't properly sanitised before
being used. This can be exploited to delete arbitrary files
accessible to the web server process.

The vulnerabilities have been reported in version 2 through 2.0.2.

SOLUTION:
Update to version 2.0.3.
http://codex.gallery2.org/index.php/Gallery2:Download

PROVIDED AND/OR DISCOVERED BY:
James Bercegay, GulfTech Security Research Team.

ORIGINAL ADVISORY:
http://gallery.menalto.com/gallery_2.0.3_released
http://www.gulftech.org/?node=research&article_id=00106-03022006

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