CVE-2021-21357

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-21357
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21357.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-21357
Aliases
Published
2021-03-23T02:15:12Z
Modified
2024-06-06T13:25:07.492899Z
Severity
  • 8.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H CVSS Calculator
Summary
[none]
Details

TYPO3 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.

References

Affected packages

Git / github.com/typo3/typo3.cms

Affected ranges

Type
GIT
Repo
https://github.com/typo3/typo3.cms
Events

Affected versions

v11.*

v11.0.0
v11.1.0