CVE-2021-21357
CVSS V2 Medium 6.5
CVSS V3 High 8.3
Description
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.
Overview
- CVE ID
- CVE-2021-21357
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-03-23T02:15:12
- Last Modified Date
- 2021-03-26T18:55:38
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* | 1 | OR | 8.0.0 | 8.7.40 |
| cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* | 1 | OR | 9.0.0 | 9.5.25 |
| cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* | 1 | OR | 10.0.0 | 10.4.14 |
| cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* | 1 | OR | 11.0.0 | 11.1.1 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.5
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- HIGH
- Base Score
- 8.3
- Base Severity
- HIGH
- Exploitability Score
- 2.8
- Impact Score
- 5.5
References
| Reference URL | Reference Tags |
|---|---|
| https://typo3.org/security/advisory/typo3-core-sa-2021-003 | Vendor Advisory |
| https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-3vg7-jw9m-pc3f | Third Party Advisory |
| https://packagist.org/packages/typo3/cms-form | Release Notes Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-21357 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21357 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:18:32 | Added to TrackCVE | |||
| 2022-12-06 00:12:08 | 2021-03-23T02:15Z | 2021-03-23T02:15:12 | CVE Published Date | updated |
| 2022-12-06 00:12:08 | 2021-03-26T18:55:38 | CVE Modified Date | updated | |
| 2022-12-06 00:12:09 | Analyzed | Vulnerability Status | updated |