Fluid Attacks Database

Description

Cross-Site Scripting in Content Preview (CType menu)

Problem

It has been discovered that content elements of type menu are vulnerable to cross-site scripting when their referenced items get previewed in the page module. A valid backend user account is needed to exploit this vulnerability.

Solution

Update to TYPO3 versions 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 that fix the problem described.

Credits

Thanks to TYPO3 contributor Oliver Bartsch who reported and fixed the issue.

References

TYPO3-CORE-SA-2021-008

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Package	Affected version	Patched versions
packagist	typo3/cms-core	>=10.0.0 <10.4.14 \|\| >=11.0.0 <11.1.1 \|\| >=9.0.0 <9.5.25	10.4.14, 11.1.1, 9.5.25
packagist	typo3/cms	>=10.0.0 <10.4.14 \|\| >=11.0.0 <11.1.1 \|\| >=9.0.0 <9.5.25	10.4.14, 11.1.1, 9.5.25
packagist	typo3/cms-backend	>=7.0.0 <7.6.51 \|\| >=8.0.0 <8.7.40 \|\| >=9.0.0 <9.5.25 \|\| >=10.0.0 <10.4.14 \|\| >=11.0.0 <11.1.1	7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1

Aliases

1. CVE-2021-213702. NVD-2021-213703. OSV-2021-213704. GHSA-x7hc-x7fm-f7qh5. GCVE-2021-21370

References

1. https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-x7hc-x7fm-f7qh2. https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-21370.yaml3. https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-21370.yaml4. https://packagist.org/packages/typo3/cms-backend5. https://typo3.org/security/advisory/typo3-core-sa-2021-008