typo3-cms/core · Security
TYPO3 Arbitrary Code Execution and Cross-Site Scripting in Backend API
- GHSA ID
- GHSA-x428-565f-8xj2
- Severity
- high
- Published
- Updated
- CVSS
- 8.8 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS v3
- 8.8 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
Backend API configuration using Page TSconfig is vulnerable to arbitrary code execution and cross-site scripting. TSconfig fields of page properties in backend forms can be used to inject malicious sequences. Field tsconfig_includes is vulnerable to directory traversal leading to same scenarios as having direct access to TSconfig settings.
A valid backend user account having access to modify values for fields pages.TSconfig and pages.tsconfig_includes is needed in order to exploit this vulnerability.
CWEs
- CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- https://github.com/TYPO3-CMS/core/commit/3a99a0877de6ad9cb39ba73146292b90e13294db ↗
- https://github.com/TYPO3-CMS/core/commit/822e62ec267fbe3c70a26f1c4f73f47fc615c930 ↗
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/2019-06-25-4.yaml ↗
- https://typo3.org/security/advisory/typo3-core-sa-2019-019 ↗
- https://github.com/advisories/GHSA-x428-565f-8xj2 ↗