Secunia

Some vulnerabilities have been reported in Cisco User-Changeable Password (UCP), which can be exploited by malicious people to conduct cross-site scripting attacks or potentially to compromise a vulnerable system.

1) Multiple boundary errors exist within the UCP CGI script ("CSuserGCI.exe") when processing the "Logout", "Main", and "ChangePass" arguments. These can be exploited to cause buffer overflows via overly long subsequent arguments.

NOTE: Other arguments may also be affected.

Successful exploitation may allow execution of arbitrary code.

2) Input passed via the "Help" parameter to the UCP CGI script ("CSuserCGI.exe") 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 vulnerabilities are reported in versions prior to 4.2.

Solution
Update to version 4.2.

Provided and/or discovered by
Felix 'FX' Lindner, Recurity Labs GmbH.

Original Advisory
Cisco:
http://www.cisco.com/warp/public/707/cisco-sa-20080312-ucp.shtml

Recurity Labs:
http://www.recurity-labs.com/content/pub/RecurityLabs_Cisco_ACS_UCP_advisory.txt

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