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TYPO3-CORE-SA-2016-002: Cross-Site Scripting in link validator component

Categories: TYPO3 CMS Created by Helmut Hummel
It has been discovered, that TYPO3 is susceptible to Cross-Site Scripting

Component Type: TYPO3 CMS

Release Date: February 16, 2016

Vulnerable subcomponent: link validator

Vulnerability Type: Cross-Site Scripting

Affected Versions: Versions 6.2.0 to 6.2.17 and 7.6.0 to 7.6.2

Severity: Low

Suggested CVSS v2.0: AV:N/AC:M/Au:S/C:P/I:P/A:N/E:F/RL:O/RC:C

CVE: not assigned yet

Problem Description: Failing to sanitize content from editors, the link validator component is susceptible to Cross-Site Scripting. A valid editor account with access to content which is scanned by the link validator component is required to exploit this vulnerability

Solution: Update to TYPO3 versions 6.2.18 or 7.6.3 that fix the problem described.

Credits: Thanks to Steffen Müller who discovered and reported the issue.

General Advice: Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list.

General Note: All security related code changes are tagged so that you can easily look them up on our review system.