CVE-2022-23504: TYPO3 contains Sensitive Information Disclosure via YAML Placeholder Expressions in Site Configuration
First published: Tue Dec 13 2022(Updated: )
> ### CVSS: `CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:L/E:F/RL:O/RC:C` (5.3) ### Problem Due to the lack of handling user-submitted [YAML placeholder expressions](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Configuration/Yaml/YamlApi.html#custom-placeholder-processing) in the site configuration backend module, attackers could expose sensitive internal information, such as system configuration or HTTP request messages of other website visitors. A valid backend user account having administrator privileges is needed to exploit this vulnerability. ### Solution Update to TYPO3 versions 9.5.38 ELTS, 10.4.33, 11.5.20, 12.1.1 that fix the problem described above. ### Credits Thanks to TYPO3 core & security team member Oliver Hader who reported and fixed the issue. ### References * [TYPO3-CORE-SA-2022-016](https://typo3.org/security/advisory/typo3-core-sa-2022-016)
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/typo3/cms-core | >=10.0.0<10.4.33>=11.0.0<11.5.20>=12.0.0<12.1.1 | |
| composer/typo3/cms | >=10.0.0<10.4.33>=11.0.0<11.5.20>=12.0.0<12.1.1 | |
| Typo3 Typo3 | >=9.0.0<9.5.38 | |
| Typo3 Typo3 | >=10.0.0<10.4.33 | |
| Typo3 Typo3 | >=11.0.0<11.5.20 | |
| Typo3 Typo3 | >=12.0.0<12.1.1 | |
| composer/typo3/cms | >=12.0.0<12.1.1 | 12.1.1 |
| composer/typo3/cms | >=11.0.0<11.5.20 | 11.5.20 |
| composer/typo3/cms | >=10.0.0<10.4.33 | 10.4.33 |
| composer/typo3/cms-core | >=12.0.0<12.1.1 | 12.1.1 |
| composer/typo3/cms-core | >=11.0.0<11.5.20 | 11.5.20 |
| composer/typo3/cms-core | >=10.0.0<10.4.33 | 10.4.33 |
| composer/typo3/cms-core | >=9.0.0<9.5.38 | 9.5.38 |
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Reference Links
- https://typo3.org/security/advisory/typo3-core-sa-2022-016
- https://github.com/TYPO3/typo3/security/advisories/GHSA-8w3p-qh3x-6gjr
- https://github.com/TYPO3/typo3/commit/d1e627ff7eef07bd94c53db861e85977b203900a
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2022-23504.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2022-23504.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2022-23504
- https://github.com/advisories/GHSA-8w3p-qh3x-6gjr (Advisory)
Frequently Asked Questions
What is TYPO3-CORE-SA-2022-016?
TYPO3-CORE-SA-2022-016 is a vulnerability that allows sensitive information disclosure in TYPO3 versions prior to 9.5.38, 10.4.33, 11.5.20, and 12.1.1.
How does TYPO3-CORE-SA-2022-016 work?
TYPO3-CORE-SA-2022-016 works by exploiting the lack of handling user-submitted YAML placeholder expressions in the site configuration backend module.
What is the severity level of TYPO3-CORE-SA-2022-016?
TYPO3-CORE-SA-2022-016 has a severity level of medium (4.9).
How can I fix TYPO3-CORE-SA-2022-016?
To fix TYPO3-CORE-SA-2022-016, update TYPO3 to versions 9.5.38, 10.4.33, 11.5.20, or 12.1.1.
Where can I find more information about TYPO3-CORE-SA-2022-016?
More information about TYPO3-CORE-SA-2022-016 can be found at the TYPO3 security advisory page (https://typo3.org/security/advisory/typo3-core-sa-2022-016) and the TYPO3 GitHub security advisory page (https://github.com/TYPO3/typo3/security/advisories/GHSA-8w3p-qh3x-6gjr).
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