Vulnerabilities > CVE-2021-21359 - Unspecified vulnerability in Typo3
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.25, 10.4.14, 11.1.1 requesting invalid or non-existing resources via HTTP triggers the page error handler which again could retrieve content to be shown as 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 is fixed in versions 9.5.25, 10.4.14, 11.1.1.
Vulnerable Configurations
References
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-4p9g-qgx9-397p
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-4p9g-qgx9-397p
- https://packagist.org/packages/typo3/cms-core
- https://packagist.org/packages/typo3/cms-core
- https://typo3.org/security/advisory/typo3-core-sa-2021-005
- https://typo3.org/security/advisory/typo3-core-sa-2021-005