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TYPO3-EXT-SA-2016-005: Cross-Site Scripting in extension "Extension Kickstarter" (kickstarter)

It has been discovered that the extension "Extension Kickstarter" (kickstarter) is susceptible to Cross-Site Scripting.

Release Date: March 03, 2016

Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.

Affected Versions: version 0.5.3 and below

Vulnerability Type: Cross-Site Scripting

Severity: Low

Suggested CVSS v2.0: AV:N/AC:M/Au:S/C:N/I:N/A:N/E:F/RL:U/RC:C (What's that?)

Problem Description: The extension fails to properly encode extension information in its edit mask. An admin backend user is needed to exploit the vulnerability.

Solution: Versions of this extension that are known to be vulnerable will no longer be available for download from the TYPO3 Extension Repository. The extension is no longer maintained and the author will not provide a security fix for the reported vulnerability. Please uninstall and delete the extension from your installation.

Credits: Credits go to Oliver Klee who discovered and reported the vulnerability.

General advice: Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list to receive future Security Bulletins via E-mail.