Package: phpbb2
Version: 2.0.21-5
Severity: important
Tags: security

Some vulnerabilities have been discovered in phpBB, which can be exploited by 
malicious people to conduct cross-site request forgery attacks and cross-site 
scripting attacks.

1) The application allows users to send messages via HTTP requests without 
performing any validity checks to verify the request. This can be exploited to 
send 
messages to arbitrary users by e.g. tricking a target user into visiting a 
malicious website.

2) Input passed to the form field "Message body" in privmsg.php is not properly 
sanitised before it is returned to the user when sending messages to a 
non-existent user. This can be exploited to execute arbitrary HTML and script 
code in a user's browser session in context of an affected site.

Successful exploitation of the vulnerabilities requires that the target user is 
logged in.

The vulnerabilities are confirmed in version 2.0.21. Other versions may also be 
affected.

http://secunia.com/advisories/23283/


-- System Information:
Debian Release: 4.0
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-3-486
Locale: LANG=pt_BR.UTF-8, LC_CTYPE=pt_BR.UTF-8 (charmap=UTF-8)


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