CVE-2022-39261
Description
Twig is a template language for PHP. Versions 1.x prior to 1.44.7, 2.x prior to 2.15.3, and 3.x prior to 3.4.3 encounter an issue when the filesystem loader loads templates for which the name is a user input. It is possible to use the `source` or `include` statement to read arbitrary files from outside the templates' directory when using a namespace like `@somewhere/../some.file`. In such a case, validation is bypassed. Versions 1.44.7, 2.15.3, and 3.4.3 contain a fix for validation of such template names. There are no known workarounds aside from upgrading.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2022-39261
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 3.4.3-1 |
| debian | bullseye | fixed | 2.14.3-1+deb11u2 |
| debian | forky | fixed | 3.4.3-1 |
| debian | sid | fixed | 3.4.3-1 |
| debian | trixie | fixed | 3.4.3-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | drupal/core | >=8.0.0,<9.3.22||>=9.4.0,<9.4.7 | 9.3.22 |
| Packagist | twig/twig | >=1.0.0,<1.44.7 | 1.44.7 |
| Packagist | twig/twig | >=2.0.0,<2.15.3 | 2.15.3 |
| Packagist | twig/twig | >=3.0.0,<3.4.3 | 3.4.3 |
References
- https://www.drupal.org/sa-core-2022-016
- https://github.com/twigphp/Twig/security/advisories/GHSA-52m2-vc4m-jj33
- https://nvd.nist.gov/vuln/detail/CVE-2022-39261
- https://github.com/twigphp/Twig/commit/35f3035c5deb0041da7b84daf02dea074ddc7a0b
- https://github.com/FriendsOfPHP/security-advisories/blob/master/twig/twig/CVE-2022-39261.yaml
- https://github.com/twigphp/Twig
- https://lists.debian.org/debian-lts-announce/2022/10/msg00016.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2OKRUHPVLIQVFPPJ2UWC3WV3WQO763NR
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AUVTXMNPSZAHS3DWZEM56V5W4NPVR6L7
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NWRFPZSR74SYVJKBTKTMYUK36IJ3SQJP
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TW53TFJ6WWNXMUHOFACKATJTS7NIHVQE
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WV5TNNJLGG536TJH6DLCIAAZZIPV2GUD
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YU4ZYX62H2NUAKKGUES4RZIM4KMTKZ7F
- https://symfony.com/blog/twig-security-release-possibility-to-load-a-template-outside-a-configured-directory-when-using-the-filesystem-loader
- https://www.debian.org/security/2022/dsa-5248
- https://security-tracker.debian.org/tracker/CVE-2022-39261
Verify integrity in audit chain (admin only). AS-IS.