CVE-2021-21357: Broken Access Control in Form Framework
TYPO3 · TYPO3.CMS
Affected: TYPO3.CMS · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 76% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- TYPO3 · TYPO3.CMS>= 8.0.0, <= 8.7.39; >= 9.0.0, <= 9.5.24; >= 10.0.0, <= 10.4.13; >= 11.0.0, <= 11.1.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Possible (1 to 10%). EPSS between 1% and 10%.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- TYPO3
- Published
- March 2021
CoverageNo articles yet
No CyberSIXT article names CVE-2021-21357 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.