Some vulnerabilities have been reported in OTRS, which can be exploited by malicious users to conduct script insertion attacks and by malicious people to cause a DoS (Denial of Service).

1) Certain unspecified input is not properly sanitised before being displayed to the user. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious data is being viewed.

2) An error exists in the processing of regular expressions while viewing certain articles. This can be exploited to cause a DoS due to high CPU consumption via specially crafted emails sent to the affected system.

The vulnerabilities are reported in versions 2.3.x through 2.4.7.

Solution
Update to version 2.3.6 or 2.4.8.

Provided and/or discovered by
The vendor credits Marcus Krause of the TYPO3 Security Team, Aaron Roberts, Alexander Neufeld, and Arnfinn Roland.

Changelog
Further details available to Secunia VIM customers

Original Advisory
http://otrs.org/advisory/OSA-2010-02-en/

Deep Links
Links available to Secunia VIM customers