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TITLE:
FUDforum Avatar Upload Vulnerability

SECUNIA ADVISORY ID:
SA16627

VERIFY ADVISORY:
http://secunia.com/advisories/16627/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
FUDforum 2.x
http://secunia.com/product/5530/

DESCRIPTION:
riklaunim has discovered a vulnerability in FUDforum, which can be
exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to missing restrictions on the types
of files that users are allowed to upload as customised avatar
images. This can be exploited to upload malicious script files (e.g.
PHP scripts) inside the web root.

Successful exploitation requires that users are allowed to add
customised avatars (in the default settings the administrator has to
approve new avatars).

The vulnerability has been confirmed in version 2.6.15. Prior
versions may also be affected.

SOLUTION:
Update to version 2.7.1.
http://fudforum.org/download.php

Do not allow users to add customised avatars.

PROVIDED AND/OR DISCOVERED BY:
riklaunim

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
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Please Note:
Secunia recommends that you verify all advisories you receive by
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