Technical Description

Multiple vulnerabilities were identified in FlatNuke, which may be exploited by remote attackers to compromise a vulnerable server, conduct cross site scripting attacks or cause a denial of service.

- The first flaw is due to an input validation error in the "Referer" HTTP header, which may be exploited by a remote attacker to execute arbitrary commands with the privileges of the web server.

- The second vulnerability is due to an input validation error in the "help.php" and "footer.php" files when handling a specially crafted "border" or "back" parameter, which may be exploited by attackers to cause arbitrary scripting code to be executed by the user's browser.

- The third issue is due to an infinite loop in the "foot_news.php" file when called directly via the browser, which may be exploited by attackers to cause a denial of service.

- The fourth flaw is due to an input validation error in the "thumb.php" file when handling a specially crafted "image" parameter, which may be exploited to conduct directory traversal attacks or to disclose the installation path.

Affected Products

FlatNuke version 2.5.3 and prior

Solution

Upgrade to FlatNuke version 2.5.4 :
http://sourceforge.net/project/showfiles.php?group_id=93076&package_id=98622

References

http://www.vupen.com/english/advisories/2005/0697
http://www.secwatch.org/advisories/secwatch/20050604_flatnuke.txt

Credits

Vulnerability reported by SecWatch

ChangeLog

2005-06-07 : Initial release

Vulnerability Management

Subscribe to VUPEN VNS and receive real-time e-mail and SMS alerts when new advisories or patches relevant to your systems and network configurations are available.

Feedback

If you have additional information or corrections for this security advisory please submit them via our contact form.