TITLE:
PunBB Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA17425

VERIFY ADVISORY:
http://secunia.com/advisories/17425/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting, Spoofing, Exposure of sensitive information

WHERE:
>From remote

SOFTWARE:
PunBB 1.x
http://secunia.com/product/3700/

DESCRIPTION:
Some vulnerabilities have been reported in PunBB, which potentially
can be exploited by malicious people to conduct spoofing attacks,
disclose certain information, and conduct script insertion attacks.

1) An error where the "HTTP_X_FORWARDED_FOR" parameter is improperly
trusted, may be exploited to spoof the IP address.

2) An error in the execution of "unregister_globals()" may be
exploited to disclose certain unspecified information.

3) An input validation error in the avatar upload handling may
exploited to execute arbitrary HTML and script code in a user's
browser session in context of an affected site by uploading a
specially crafted valid image containing embedded HTML and script
code.

This is related to:
SA17295

Successful exploitation requires that the malicious avatar is
accessed directly in the Microsoft Internet Explorer browser (i.e.
not referenced via an image tag).

SOLUTION:
Update to 1.2.10.
http://www.punbb.org/downloads.php

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Jonatan Wulcan, Stefan Esser, Smartys, and Michael
"PMD" Dorman.

OTHER REFERENCES:
SA17295:
http://secunia.com/advisories/17295/

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