CVE-2021-21357

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Summary

CVECVE-2021-21357
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-23 02:15:00 UTC
Updated2021-03-26 18:55:00 UTC
DescriptionTYPO3 is an open source PHP based web content management system. In TYPO3 before versions 8.7.40, 9.5.25, 10.4.14, 11.1.1 due to improper input validation, attackers can by-pass restrictions of predefined options and submit arbitrary data in the Form Designer backend module of the Form Framework. In the default configuration of the Form Framework this allows attackers to explicitly allow arbitrary mime-types for file uploads - however, default _fileDenyPattern_ successfully blocked files like _.htaccess_ or _malicious.php_. Besides that, attackers can persist those files in any writable directory of the corresponding TYPO3 installation. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 8.7.40, 9.5.25, 10.4.14, 11.1.1.

Risk And Classification

Problem Types: CWE-22 | CWE-20 | CWE-434

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Typo3 Typo3 All All All All

References

ReferenceSourceLinkTags
TYPO3-CORE-SA-2021-003: Broken Access Control in Form Framework MISC typo3.org
Broken Access Control in Form Framework · Advisory · TYPO3/TYPO3.CMS · GitHub CONFIRM github.com
typo3/cms-form - Packagist MISC packagist.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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