Description - Cookie Auth Bypass, SQL Injections, XSS in 427BB

Multiple Vulnerabilities found in 427BB script.

Exploit
Available
Solution
Not available - check vendor's website

427BB has multiple vulnerabilities.

1. Authentication bypass using modified cookie values.

Vulnerabe scripts: login.php getvars.php

To authorize any logged-in user forum scripts checks only three cookie values:

  • username
  • authenticated
  • usertype

Forum dont make password comparison.

2. 427BB has Multiple SQL Injection Vulnerabilities.

For example:

Vulnerabe script: showthread.php

Variable $ForumID isn't properly sanitized before being used in a SQL query. This can be used to make any SQL query by injecting arbitrary SQL code

3. Arbitrary script code insertion is possible when posting a message containing URL.

Vulnerable Script: posts.php

Condition: visitor needs to click this link

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