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medium5.4

CVE-2021-21365

Cross-Site Scripting in Bootstrap Package

Impact

### Problem It has been discovered that rendering content in the website frontend is vulnerable to cross-site scripting. A valid backend user account is needed to exploit this vulnerability. The following templates are affected by the vulnerability: * `Resources/Private/Partials/ContentElements/Carousel/Item/CallToAction.html` * `Resources/Private/Partials/ContentElements/Carousel/Item/Header.html` * `Resources/Private/Partials/ContentElements/Carousel/Item/Text.html` * `Resources/Private/Partials/ContentElements/Carousel/Item/TextAndImage.html` * `Resources/Private/Partials/ContentElements/Header/SubHeader.html` Users of the extension, who have overwritten the affected templates with custom code must manually apply the security fix as shown in [this Git commit](https://github.com/benjaminkott/bootstrap_package/commit/de3a568fc311d6712d9339643e51e8627c80530b). ### Solution Update to version 7.1.2, 8.0.8, 9.0.4, 9.1.3, 10.0.10 or 11.0.3 of the Bootstrap Package that fix the problem described. Updated version are available from the TYPO3 extension manager, Packagist and at https://extensions.typo3.org/extension/download/bootstrap_package/. ### Credits Thanks to TYPO3 security team member Oliver Hader who reported and fixed the issue.

Affected packages

EcosystemPackageAffectedFixed in
composerbk2k/bootstrap-package>= 7.1.0, < 7.1.27.1.2

Affected products

VendorProductAffected versions
Typo3Typo3
before 7.1.2
from 8.0.0 before 8.0.8
from 9.0.0 before 9.0.4
from 9.1.0 before 9.1.3
from 10.0.0 before 10.0.10
from 11.0.0 before 11.0.3

Weakness classification

CWE-79

References