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TITLE:
MyPHP Forum Sender Spoofing Vulnerability

SECUNIA ADVISORY ID:
SA15166

VERIFY ADVISORY:
http://secunia.com/advisories/15166/

CRITICAL:
Less critical

IMPACT:
Spoofing

WHERE:
>From remote

SOFTWARE:
MyPHP Forum 3.x
http://secunia.com/product/5005/
MyPHP Forum 2.x
http://secunia.com/product/5006/
MyPHP Forum 1.x
http://secunia.com/product/4631/

DESCRIPTION:
Terencentanio Enache has reported a vulnerability in MyPHP Forum,
which can be exploited by malicious users to conduct spoofing
attacks.

The problem is that the identity of a message sender is taken from
user supplied input. This can be exploited to spoof the username by
modifying the "nbuser" / "sender" parameter in a POST request to
"post.php" / "privmsg.php".

The vulnerability has been reported in version 3. Version 1 and 2 may
reportedly also be affected.

SOLUTION:
Edit the source code to ensure that the identity of senders are
properly verified.

PROVIDED AND/OR DISCOVERED BY:
Terencentanio Enache

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About:
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http://secunia.com/about_secunia_advisories/


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