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Insecure Library Loading
Highly critical

Chatness Security Bypass and PHP Code Execution

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Release Date:  2007-04-13    Last Update:  2007-04-27    Views:  8,355

Secunia Advisory SA24873

Where:

From remote

Impact:

Security Bypass, System access

Solution Status:

Unpatched

Software:

CVE Reference(s):

Description


Gammarays has discovered two vulnerabilities in Chatness, which can be exploited by malicious people to bypass certain security restrictions and by malicious users to compromise a vulnerable system.

1) The vulnerability is caused due to improper authentication verification in admin/options.php. This can be exploited to retrieve the administrator username and password.

2) Input passed to the "html" parameter in admin/save.php is not properly sanitised before it is written to head.html or foot.html. Both files are included in index.php, which can be exploited to execute arbitrary PHP code.

Successful exploitation requires valid administrator credentials (see vulnerability #1).

The vulnerabilities are confirmed in version 2.5.3. Other versions may also be affected.


Solution:
Restrict access to the "admin/options.php" script (e.g. with ".htaccess").

Further details available to Secunia VIM customers

Provided and/or discovered by:
Gammarays

Original Advisory:
http://milw0rm.com/exploits/3725

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Chatness Security Bypass and PHP Code Execution

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