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CVE-2022-39261

Published: 28 September 2022

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.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
php-twig
Launchpad, Ubuntu, Debian
focal
Released (2.12.5-1ubuntu0.1~esm1)
Available with Ubuntu Pro
jammy
Released (3.3.8-2ubuntu4+esm1)
Available with Ubuntu Pro
trusty Ignored
(end of standard support)
xenial Ignored
(end of standard support)
bionic Does not exist

kinetic Ignored
(end of life, was needed)
upstream
Released (1.44.7, 2.15.3, 3.4.3)
lunar Not vulnerable
(3.4.3-1)
mantic Not vulnerable
(3.4.3-1)
Patches:
upstream: https://github.com/twigphp/Twig/commit/35f3035c5deb0041da7b84daf02dea074ddc7a0b

twig
Launchpad, Ubuntu, Debian
bionic
Released (2.4.6-1ubuntu0.1~esm1)
Available with Ubuntu Pro
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (1.44.7, 2.15.3, 3.4.3)
xenial
Released (1.23.1-1ubuntu4+esm1)
Available with Ubuntu Pro
lunar Does not exist

mantic Does not exist

Patches:

upstream: https://github.com/twigphp/Twig/commit/35f3035c5deb0041da7b84daf02dea074ddc7a0b

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N