Secunia

A vulnerability has been reported in E107, which can be exploited by malicious users to prevent others from accessing certain pages.

The vulnerability is reportedly caused due to a validation error in "Chatbox.php" when handling input supplied in the "Name:" field. This can be exploited by including arbitrary script code, which will result in some pages not being shown. Execution of script code is reportedly not possible.

Successful exploitation requires that the "Chatbox.php" (tagboard) is enabled.

The vulnerability has been reported in versions 0.545 and 0.603. Other versions may also be affected.

Solution
Update to version 0.616 or later.

Provided and/or discovered by
Blademaster

Changelog
Further details available in Customer Area

Original Advisory
E107 DoS Vulnerability:
http://www.hackingheaven.com/index.php?name=PNphpBB2&file=viewtopic&t=21

Deep Links
Links available in Customer Area