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HTB22965: Multiple XSS vulnerabilities in BackupPC
From: advisory () htbridge ch
Date: Thu, 28 Apr 2011 11:08:56 +0200 (CEST)

Vulnerability ID: HTB22965
Reference: http://www.htbridge.ch/advisory/multiple_xss_vulnerabilities_in_backuppc.html
Product: BackupPC 
Vendor: Craig Barratt ( http://backuppc.sourceforge.net/ ) 
Vulnerable Version: 3.1.0, perhaps 3.2.0 also vulnerable
Vendor Notification: 14 April 2011 
Vulnerability Type: XSS (Cross Site Scripting)
Status: Fixed by Vendor
Risk level: Medium 
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ ) 

Vulnerability Details:
User can execute arbitrary JavaScript code within the vulnerable application.

The vulnerability exists due to failure in many scripts to properly sanitize user-supplied input. Successful 
exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based 
authentication credentials, disclosure or modification of sensitive data.

An attacker can use browser to exploit this vulnerability. The following PoC is available:


http://host/index.cgi?action=browse&host=localhost&num=99999%22%3E%3Cscript%3Ealert%28123%29%3C/script%3E
http://host/index.cgi?action=RestoreFile&host=localhost&num=1&share=%3Cscript%3Ealert%28234%29%3C/script%3E&dir=


Solution: Upgrade to the most recent version


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