Описание
Twig may load a template outside a configured directory when using the filesystem loader
Description
When using the filesystem loader to load 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).
Resolution
We fixed validation for such template names.
Even if the 1.x branch is not maintained anymore, a new version has been released.
Credits
We would like to thank Dariusz Tytko for reporting the issue and Fabien Potencier for fixing the issue.
Ссылки
- 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://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://www.drupal.org/sa-core-2022-016
Пакеты
twig/twig
>= 1.0.0, < 1.44.7
1.44.7
twig/twig
>= 2.0.0, < 2.15.3
2.15.3
twig/twig
>= 3.0.0, < 3.4.3
3.4.3
Связанные уязвимости
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.
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.
Twig is a template language for PHP. Versions 1.x prior to 1.44.7, 2.x ...