File: 1137.txt

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Rule:  

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Sid:
1137

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Summary:
This event is generated when an attempt is made to access the php 
application Phorum using a default administrator account.

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Impact:
Severe - Phorum administration is controlled by the attacker

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Detailed Information:
Phorum is a popular PHP forum and versions 3.0.7 and previous are 
vulnerable to this exploit.  An attacker can exploit a bug in Phorum's 
auth.php script to gain administration access using a universal password
(boogieman) supplied with the variable PHP_AUTH_USER. Phorum's PHP 
scripts rely on auth.php to authenticate the user.

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Attack Scenarios:
The attacker requests /admin.php?PHP_AUTH_USER=boogieman from the Phorum
PHP scripts. It is now possible to use the administration script to 
modify all Phorum settings.

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Ease of Attack:
Simple

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False Positives:
None known

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False Negatives:
None known

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Corrective Action:
Update Phorum from www.phorum.org

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Contributors:
Snort documentation contributed by Ueli Kistler, <u.kistler@engagesecurity.com>
Original Rule Writer Max Vision <vision@whitehats.com>
Sourcefire Research Team
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:

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