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OpenBSD bgplg "cmd" Cross-Site Scripting Vulnerability

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Release Date:  2008-01-31    Last Update:  2008-02-07    Views:  10,249

Secunia Advisory SA28726

Where:

From remote

Impact:

Cross Site Scripting

Solution Status:

Vendor Workaround

Operating System:

CVE Reference(s):

Description


Alexandr Polyakov and Anton Karpov have reported a vulnerability in OpenBSD bgplg, which can be exploited by malicious people to conduct cross-site scripting attacks.

Input via the "cmd" parameter to the bgplg cgi-bin script 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.

The vulnerability is reported in OpenBSD 4.1 and confirmed in OpenBSD 4.2.


Solution:
Filter malicious characters and character sequences using a web proxy. Fixed in CVS repository.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Alexandr Polyakov and Anton Karpov, Digital Security Research Group

Original Advisory:
http://www.mail-archive.com/misc@openbsd.org/msg49057.html
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/bgplg/bgplg.c

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: OpenBSD bgplg "cmd" Cross-Site Scripting Vulnerability

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