26216 : MyBulletinBoard (MyBB) Registration username Field domecode() Function PHP Code Execution
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Info

Last Modified

about 1 year ago

Percent Complete

100%

Disclosure

Jun 12, 2006

Discovery

Unknown

Dates

Exploit

Jun 13, 2006

Solution

Unknown

Keywords

No Keywords

Description

MyBulletinBoard (MyBB) contains a flaw that allows remote PHP code execution. This flaw exists because the application does not validate input supplied to the domecode() function upon submission to the inc/functions_post.php script. Input passed to the username field when registering isn't properly sanitized before being used in a "preg_replace" call, which can be exploited by registering with a specially crafted username and then previewing a post containing the "/slap" string.

Classification

Location: Remote/Network Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Unknown
OSVDB: Web Related

Solution

Upgrade to version 1.1.3 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

MyBulletinBoard Group

MyBulletinBoard (MyBB)

1.1.2

References

CVE ID: 2006-2908 (see also: NVD)
Secunia Advisory ID: 20371
FrSIRT Advisory: ADV-2006-2288
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/2006-06/0365.html
http://archives.neohapsis.com/archives/fulldisclosure/2006-06/0224.html
Other Advisory URL: http://secunia.com/secunia_research/2006-40/advisory/
Generic Exploit URL: http://www.514.es/download/mybibi.pl
Vendor URL: http://www.mybboard.com/

Credit

Andreas Sandblad - Secunia Research

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