TYPO3 contains Sensitive Information Disclosure via YAML Placeholder Expressions in Site Configuration
TYPO3 is an open source PHP based web content management system. Versions prior to 9.5.38, 10.4.33, 11.5.20, and 12.1.1 are subject to Sensitive Information Disclosure. Due to the lack of handling user-submitted YAML placeholder expressions in the site configuration backend module, attackers could expose sensitive internal information, such as system configuration or HTTP request messages of other website visitors. A valid backend user account having administrator privileges is needed to exploit this vulnerability. This issue has been patched in versions 9.5.38 ELTS, 10.4.33, 11.5.20, 12.1.1.
Problem Types
| Type | CWE ID | Description |
|---|
| CWE | CWE-200 | CWE-200: Exposure of Sensitive Information to an Unauthorized Actor |
| CWE | CWE-917 | CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') |
Type: CWE
Description: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Type: CWE
Description: CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
Metrics
| Version | Base score | Base severity | Vector |
|---|
| 3.1 | 5.7 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:L |
Version: 3.1
Base score: 5.7
Base severity: MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:L