TITLE:
W-Agora Local File Inclusion and File Upload Vulnerabilities

SECUNIA ADVISORY ID:
SA17201

VERIFY ADVISORY:
http://secunia.com/advisories/17201/

CRITICAL:
Highly critical

IMPACT:
Exposure of sensitive information, System access

WHERE:
>From remote

SOFTWARE:
W-Agora 4.x
http://secunia.com/product/911/

DESCRIPTION:
rgod has discovered some vulnerabilities in W-Agora, which can be
exploited by malicious people to disclose sensitive information and
compromise a vulnerable system.

1) Input passed to the "site" parameter in "extras/quicklist.php"
isn't properly verified, before it is used to include files. This can
be exploited to include arbitrary files from local resources.

2) The problem is that arbitrary files can be uploaded to a location
inside the web root via the "browse_avatar.php" and "insert.php"
scripts. This can e.g. be exploited to upload and execute a malicious
PHP script.

The vulnerabilities have been confirmed in version 4.2.0. Other
versions may also be affected.

SOLUTION:
1) Edit the source code to ensure that input is properly verified.
2) Restrict access to the "forums" and "images/avatars/" directories.
This may affect functionality.

PROVIDED AND/OR DISCOVERED BY:
rgod

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