cve-2021-21357
Vulnerability from cvelistv5
Published
2021-03-23 01:50
Modified
2024-08-03 18:09
Severity ?
EPSS score ?
Summary
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
▼ | URL | Tags | |
---|---|---|---|
security-advisories@github.com | https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-3vg7-jw9m-pc3f | Third Party Advisory | |
security-advisories@github.com | https://packagist.org/packages/typo3/cms-form | Release Notes, Third Party Advisory | |
security-advisories@github.com | https://typo3.org/security/advisory/typo3-core-sa-2021-003 | Vendor Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-3vg7-jw9m-pc3f | Third Party Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://packagist.org/packages/typo3/cms-form | Release Notes, Third Party Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://typo3.org/security/advisory/typo3-core-sa-2021-003 | Vendor Advisory |
Impacted products
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.