TYPO3 Broken Access Control in Localization Handling

Impact

It has been discovered that backend users having limited access to specific languages are capable of modifying and creating pages in the default language which actually should be disallowed. A valid backend user account is needed in order to exploit this vulnerability.

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

Original source description

References

• Patch github.com/TYPO3/typo3/commit/5004201ee77a69cb825637bc95cdeedb1186f4d4
• Security advisory github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/2019-01-22-3.yaml
• Source reference github.com/TYPO3/typo3
• Security advisory typo3.org/security/advisory/typo3-core-sa-2019-003