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BBcode XSS in KaiBB

Description

Vulnerability ID: HTB22749 Reference: http://www.htbridge.ch/advisory/bbcode_xss_in_kaibb.html Product: KaiBB Vendor: Mi-Dia ( http://www.mi-dia.co.uk/ ) Vulnerable Version: 1.0.1 Vendor Notification: 09 December 2010 Vulnerability Type: BBcode XSS 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. BBcode isn't properly sanitized. This can be used to post arbitrary script code. 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. BBcode Example: [img][url=http://1 onerror=javascript:alert(document.cookie);"']Text Here[/url][/img]