PHP Code Execution and Multiple XSS in FreeForum

Summary

Vulnerability
PHP Code Execution and Multiple XSS in FreeForum
Discovered
2006.02.27
Last Update
2006.03.09 Exploitation code published
ID
EV0089
CVE
CVE-2006-0957 CVE-2006-0958
Risk Level
high
Type
Multiple Vulnerabilities
Status
Patched
Vendor
ZoneO-Soft (http://soft.zoneo.net/)
Vulnerable Software
FreeForum (http://soft.zoneo.net/freeForum/)
Version
1.2
PoC/Exploit
Available
Solution
Available
Discovered by
Aliaksandr Hartsuyeu (eVuln.com)

Description

Multiple Vulnerabilities found in FreeForum (http://soft.zoneo.net/freeForum/) script.

1. PHP Code Execution Vulnerability.

Vulnerable Script: func.inc.php

Variables $_SERVER[HTTP_X_FORWARDED_FOR] $_SERVER[HTTP_CLIENT_IP] are not sanitized before being written into 'Data/flood.db.php' file. This can be used to inject arbitrary PHP code by posting HTTP query with fake X-Forwarded-For or Client-ip values.

System access is possible.

2. Multiple Cross-Site Scripting

Vulnerable Script: func.inc.php

Variables $name $subject are not properly sanitized. This can be used to post message with arbitrary HTML or JavaScript code.

PoC/Exploit

1. PHP Code Execution Example.

HTTP Query:

  • POST /freeforum/index.php HTTP/1.0
  • Host: [host]
  • X-Forwarded-For: anyIP<? [code] ?>
  • Content-Length: 91
  •  
  • name=qqq&email=qqq@qqq.com&subject=qqq&text=qqq&mode=postanswer&thread=1&cat=1&submit=Add

2. Cross-Site Scripting Example.

URL: http://[host]/freeforum/index.php

Your name: [XSS]

Subject: [XSS]

Solution.

Vendor-provided solution is available now.

Install or Upgrade to version 1.2.1

http://soft.zoneo.net/freeForum/changes.php