CVE-2021-21359
Medium
Description
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.
SeverityMedium
CVSS5.9
Exploit probability—
Product
Typo3
PublishedMar 23, 2021
First seenMar 23, 2021
Weakness typeCWE-674CWE-674CWE-405CWE-405
How to fix
Update
- typo3 typo39.5.25, 10.4.14, 11.1.1 or later
- typo3/cms-core10.4.14, 11.1.1, 9.5.25 or later
- typo3/cms10.4.14, 11.1.1, 9.5.25 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| typo3 typo3 | 9.0.0 ≤ v < 9.5.25, 10.0.0 ≤ v < 10.4.14, 11.0.0 ≤ v < 11.1.1 | 9.5.25, 10.4.14, 11.1.1 |
| typo3/cms-corePackagist | 10.0.0 ≤ v < 10.4.14, 11.0.0 ≤ v < 11.1.1, 9.0.0 ≤ v < 9.5.25 | 10.4.14, 11.1.1, 9.5.25 |
| typo3/cmsPackagist | 10.0.0 ≤ v < 10.4.14, 11.0.0 ≤ v < 11.1.1, 9.0.0 ≤ v < 9.5.25 | 10.4.14, 11.1.1, 9.5.25 |
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