TITLE:
MyBB Cross-Site Scripting and Variable Manipulation Vulnerabilities

SECUNIA ADVISORY ID:
SA19668

VERIFY ADVISORY:
http://secunia.com/advisories/19668/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, Cross Site Scripting, Manipulation of data

WHERE:
>From remote

SOFTWARE:
MyBB (formerly MyBulletinBoard) 1.x
http://secunia.com/product/4479/

DESCRIPTION:
Two vulnerabilities have been reported in MyBB, which can be
exploited by malicious people to conduct cross-site scripting and SQL
injection attacks, and manipulate certain information.

1) An input validation error in the handling of attachment content
dispositions for HTML attachments can be exploited to execute
arbitrary HTML and script code in a user's browser session in context
of an affected site.

2) An error caused due to the "global.php" and "inc/init.php" scripts
not being properly protected from being accessed directly can be
exploited to manipulate arbitrary script variables.

This can further be exploited to execute arbitrary HTML and script
code in a user's browser session in context of an affected site or
manipulate SQL queries by injecting arbitrary SQL code.

The vulnerabilities have been reported in version 1.1. Prior versions
may also be affected.

SOLUTION:
Update to version 1.1.1.
http://www.mybboard.com/downloads.php

PROVIDED AND/OR DISCOVERED BY:
1) WhiteAcid
2) imei addmimistrator

ORIGINAL ADVISORY:
2)
http://myimei.com/security/2006-04-14/mybb110globalphpparameterextracting.html

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