Bug 2130762 (CVE-2022-39261)

Summary:	CVE-2022-39261 twig: Possibility to load a template outside a configured directory when using the filesystem loader
Product:	[Other] Security Response	Reporter:	Avinash Hanwate <ahanwate>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	fedora, shawn
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	twig 1.44.7, twig 2.15.3, twig 3.4.3	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-11-28 21:24:24 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2130766, 2130763, 2130764, 2130765
Bug Blocks:

Description Avinash Hanwate 2022-09-29 04:21:15 UTC

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.

https://github.com/twigphp/Twig/commit/35f3035c5deb0041da7b84daf02dea074ddc7a0b
https://github.com/twigphp/Twig/security/advisories/GHSA-52m2-vc4m-jj33
https://www.drupal.org/sa-core-2022-016

Comment 1 Avinash Hanwate 2022-09-29 04:21:53 UTC

Created php-twig tracking bugs for this issue:

Affects: epel-all [bug 2130766]
Affects: fedora-all [bug 2130763]


Created php-twig2 tracking bugs for this issue:

Affects: fedora-all [bug 2130764]


Created php-twig3 tracking bugs for this issue:

Affects: fedora-all [bug 2130765]

Comment 2 Product Security DevOps Team 2022-11-28 21:24:22 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.