CVE-2022-23500
TYPO3 CMS vulnerable to Denial of Service in Page Error Handling
Description
### Problem 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 [TYPO3-CORE-SA-2021-005](https://typo3.org/security/advisory/typo3-core-sa-2021-005) (CVE-2021-21359). ### Solution Update to TYPO3 versions 9.5.38 ELTS, 10.4.33 or 11.5.20 that fix the problem described above. ### References * [TYPO3-CORE-SA-2022-012](https://typo3.org/security/advisory/typo3-core-sa-2022-012)
How to fix CVE-2022-23500
To remediate CVE-2022-23500, upgrade the affected package to a fixed version below.
- —upgrade to 9.5.38 or later
- —upgrade to 10.4.33 or later
- —upgrade to 9.5.38 or later
Is CVE-2022-23500 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- >= 9.0.0, < 9.5.38, >= 10.0.0, < 10.4.33, >= 11.0.0, < 11.5.20
- >= 10.0.0, < 10.4.33
- >= 9.0.0, < 9.5.38
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |