CVE-2022-23500: TYPO3 subject to Uncontrolled Recursion resulting in Denial of Service
TYPO3 is an open source PHP based web content management system. In versions prior to 9.5.38, 10.4.33, 11.5.20, and 12.1.1, requesting invalid or non-existing resources via HTTP triggers the page error handler, which again could retrieve content to be shown as an error message from another page. This leads to a scenario in which the application is calling itself recursively - amplifying the impact of the initial attack until the limits of the web server are exceeded. This vulnerability is very similar, but not identical, to the one described in CVE-2021-21359. This issue is patched in versions 9.5.38 ELTS, 10.4.33, 11.5.20 or 12.1.1.
Other sources
TYPO3-CORE-SA-2022-012: Denial of Service in Page Error Handling
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2022-23500.
What is the severity of CVE-2022-23500?
The severity of CVE-2022-23500 is high with a CVSS score of 7.5.
How does CVE-2022-23500 affect TYPO3?
CVE-2022-23500 affects TYPO3 versions prior to 9.5.38, 10.4.33, 11.5.20, and 12.1.1.
What is the impact of CVE-2022-23500?
CVE-2022-23500 can lead to a denial of service (DoS) attack in the page error handling of TYPO3.
How can I fix CVE-2022-23500?
To fix CVE-2022-23500, you should update TYPO3 to version 9.5.38, 10.4.33, 11.5.20, or 12.1.1.