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HTB22997: XSS in A Really Simple Chat (ARSC)
Vulnerability ID: HTB22997
Product: A Really Simple Chat (ARSC)
Vendor: http://www.reallysimplechat.org/ ( http://www.reallysimplechat.org/ )
Vulnerable Version: 3.3-rc2
Vendor Notification: 12 May 2011
Vulnerability Type: XSS (Cross Site Scripting)
Risk level: Medium
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ )
The vulnerability exists due to failure in the "dereferer.php" script to properly sanitize user-supplied input in "arsc_link" variable.
Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based auwhentication credentials, disclosure or modification of sensitive data.
The following PoC is available: