CVE-2021-32669: Cross-Site Scripting in Backend Grid View
First published: Tue Jul 20 2021(Updated: )
### Problem Failing to properly encode settings for _backend layouts_, the corresponding grid view is vulnerable to persistent cross-site scripting. A valid backend user account is needed to exploit this vulnerability. ### Solution Update to TYPO3 versions 8.7.41 ELTS, 9.5.28, 10.4.18, 11.3.1 that fix the problem described. ### Credits Thanks to TYPO3 core merger Oliver Bartsch who reported and fixed the issue.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/typo3/cms | >=10.0.0<10.4.18>=11.0.0<11.3.1>=9.0.0<9.5.28 | |
| composer/typo3/cms-core | >=10.0.0<10.4.18>=11.0.0<11.3.1>=9.0.0<9.5.28 | |
| Typo3 Typo3 | >=8.0.0<=8.7.40 | |
| Typo3 Typo3 | >=9.0.0<=9.5.28 | |
| Typo3 Typo3 | >=10.0.0<=10.4.17 | |
| Typo3 Typo3 | >=11.0.0<=11.3.0 | |
| composer/typo3/cms | >=9.0.0<9.5.28 | 9.5.28 |
| composer/typo3/cms | >=11.0.0<11.3.1 | 11.3.1 |
| composer/typo3/cms | >=10.0.0<10.4.18 | 10.4.18 |
| composer/typo3/cms-core | >=11.0.0<11.3.1 | 11.3.1 |
| composer/typo3/cms-core | >=10.0.0<10.4.18 | 10.4.18 |
| composer/typo3/cms-core | >=9.0.0<9.5.28 | 9.5.28 |
| composer/typo3/cms-core | >=8.0.0<8.7.41 | 8.7.41 |
| >=8.0.0<=8.7.40 | ||
| >=9.0.0<=9.5.28 | ||
| >=10.0.0<=10.4.17 | ||
| >=11.0.0<=11.3.0 |
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Reference Links
- https://typo3.org/security/advisory/typo3-core-sa-2021-011
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-rgcg-28xm-8mmw
- https://nvd.nist.gov/vuln/detail/CVE-2021-32669
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32669.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32669.yaml
- https://github.com/advisories/GHSA-rgcg-28xm-8mmw (Advisory)
Frequently Asked Questions
What is TYPO3-CORE-SA-2021-011?
TYPO3-CORE-SA-2021-011 is a cross-site scripting vulnerability in TYPO3, a PHP-based web content management system.
Which versions of TYPO3 are affected by TYPO3-CORE-SA-2021-011?
Versions 9.0.0 through 9.5.28, 10.0.0 through 10.4.17, and 11.0.0 through 11.3.0 of TYPO3 are affected by TYPO3-CORE-SA-2021-011.
How severe is TYPO3-CORE-SA-2021-011?
TYPO3-CORE-SA-2021-011 has a severity rating of 5.4 (medium).
What is the Common Weakness Enumeration (CWE) ID for TYPO3-CORE-SA-2021-011?
The CWE ID for TYPO3-CORE-SA-2021-011 is CWE-79.
Where can I find more information about TYPO3-CORE-SA-2021-011?
More information about TYPO3-CORE-SA-2021-011 can be found at the TYPO3 security advisory page (https://typo3.org/security/advisory/typo3-core-sa-2021-011) and the GitHub security advisories page (https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-rgcg-28xm-8mmw).
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