Twig may load a template outside a configured directory when using the filesystem loader

高 7.5CVE-2022-39261 · BIT-drupal-2022-39261 · DRUPAL-CORE-2022-016 · 28/09/2022 公開 · 17/06/2026 更新

要点

CVE-2022-39261 は drupal/core, twig/twig, drupal (drupal) に影響する深刻度「高」 (CVSS 7.5) の脆弱性です。
今後30日間に悪用される確率（EPSS）：3.2%（全脆弱性の 88.0% より高い）。
対処：9.3.22, 9.4.7, 1.44.7, 2.15.3 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
drupal/core Packagist	`≥ 8.0.0, < 9.3.22≥ 9.4.0, < 9.4.7`	`9.3.229.4.7`
twig/twig Packagist	`≥ 1.0.0, < 1.44.7≥ 2.0.0, < 2.15.3≥ 3.0.0, < 3.4.3`	`1.44.72.15.33.4.3`
drupal drupal	`≥ 8.0.0, < 9.3.22≥ 9.4.0, < 9.4.7`	`9.3.229.4.7`
twig symfony	`≥ 1.0.0, < 1.44.7≥ 2.0.0, < 2.15.3≥ 3.0.0, < 3.4.3`	`1.44.72.15.33.4.3`

概要

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.

NVD の説明

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.