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Insecure Library Loading
Highly critical

WebMod Multiple Vulnerabilities

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Release Date:  2007-10-16    Last Update:  2008-05-05    Views:  8,295

Secunia Advisory SA27245

Where:

From remote

Impact:

Cross Site Scripting, Exposure of system information, Exposure of sensitive information, DoS, System access

Solution Status:

Unpatched

CVE Reference(s):

Description


Some vulnerabilities have been reported in WebMod, which can be exploited by malicious people to conduct cross-site scripting attacks, disclose sensitive information, cause a DoS (Denial of Service) or potentially compromise a vulnerable system.

1) Input passed to the "redir" parameter in auth.w is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.

2) A boundary error exists within the "connectHandle()" function in server.cpp. This can be exploited to cause a stack-based buffer overflow via an overly long HTTP cookie.

3) An error in parser.cpp when handling the "mode" parameter sent to auth.w can be exploited to corrupt arbitrary memory.

4) An error in parser.cpp when handling the "rconpass" parameter sent to auth.w can be exploited to cause a buffer overflow.

Successful exploitation of the vulnerabilities may allow execution of arbitrary code.

5) Input passed via HTTP requests is not properly sanitised before being used to read files. This can be exploited to read arbitrary files from local resources via directory traversal attacks.

Successful exploitation of the vulnerability requires that the application is running on Windows.

6) An error in parser.cpp when handling the "redir" parameter sent to auth.w can be exploited to trigger a NULL-pointer dereference.

The vulnerabilities are reported in version 0.48. Other versions may also be affected.


Solution:
Restrict access to trusted users only.

Provided and/or discovered by:
1) Nemessis
2, 3, 5, 6) Luigi Auriemma
4) shir

Original Advisory:
Luigi Auriemma:
http://aluigi.altervista.org/adv/webmodz-adv.txt

shir:
http://milw0rm.com/exploits/5536

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: WebMod Multiple Vulnerabilities

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