Joomla Component com_jsupport Critical XSS Vulnerability

2010-11-15 / 2010-11-16
Credit: Valentin
Risk: Low
Local: No
Remote: Yes
CWE: CWE-79


CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

# Exploit Title: Joomla Component com_jsupport Critical XSS Vulnerability # Date: 12.11.2010 # Author: Valentin # Category: webapps/0day # Version: 1.5.6 # Tested on: # CVE : # Code : [:::::::::::::::::::::::::::::::::::::: 0x1 ::::::::::::::::::::::::::::::::::::::] >> General Information Advisory/Exploit Title = Joomla Component com_jsupport Critical XSS Vulnerability Author = Valentin Hoebel Contact = valentin@xenuser.org [:::::::::::::::::::::::::::::::::::::: 0x2 ::::::::::::::::::::::::::::::::::::::] >> Product information Name = JSupport Vendor = Extension Depot Vendor Website = http://www.extensiondepot.com/extensions/jsupport.html Affected Version(s) = 1.5.6 [:::::::::::::::::::::::::::::::::::::: 0x3 ::::::::::::::::::::::::::::::::::::::] >> Critical XSS Vulnerability The component allows you to create and submit tickets. The tickets can be viewed on the website and in the admin panel. It is possible to inject arbitrary HTML and JS/VBS code into the title field of the ticket. If someone else views the ticket list, the code gets executed in the visitor's browser. This vulnerability is considered as critical since the tickets are also displayed in the administrator backend of Joomla. As soon as a user with extended priviledges views the ticket list in the backend, the code gets executed and damage can be caused. Example code for the ticket title field: "><IMG """><SCRIPT>alert("XSS")</SCRIPT> [:::::::::::::::::::::::::::::::::::::: 0x4 ::::::::::::::::::::::::::::::::::::::] >> Additional Information Advisory/Exploit Published = 12.11.2010 [:::::::::::::::::::::::::::::::::::::: 0x5 ::::::::::::::::::::::::::::::::::::::] >> Misc Greetz = cr4wl3r, JosS, packetstormsecurity.org, exploit-db.com [:::::::::::::::::::::::::::::::::::::: EOF ::::::::::::::::::::::::::::::::::::::]

References:

http://www.xenuser.org/documents/security/Joomla_com_jsupport_XSS.txt
http://www.exploit-db.com/exploits/15501
http://secunia.com/advisories/42262
http://packetstormsecurity.org/files/view/95796/joomlajsupport-xss.txt


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