873412 – dev-php/twig - validation bypass (CVE-2022-39261)

Bug 873412 - dev-php/twig - validation bypass (CVE-2022-39261)

Summary: dev-php/twig - validation bypass (CVE-2022-39261)

Status:	RESOLVED DUPLICATE of bug 873364

Alias:	None

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal minor (vote)
Assignee:	Gentoo Security

URL:	https://github.com/twigphp/Twig/secur...
Whiteboard:	B4 [ebuild]
Keywords:

Depends on:
Blocks:

Reported:	2022-09-29 07:30 UTC by filip ambroz
Modified:	2022-09-30 18:26 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

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Description filip ambroz 2022-09-29 07:30:05 UTC

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).

Fix:
https://github.com/twigphp/Twig/commit/35f3035c5deb0041da7b84daf02dea074ddc7a0b
(fixed in version 1.44.7)

Please note:
1.x branch is not maintained anymore, a new versions have been released

Comment 1 John Helmert III archtester

2022-09-30 14:16:10 UTC

Thank you for reporting! But already being tracked in bug 873364, I just missed adding the alias. Thanks!

*** This bug has been marked as a duplicate of bug 873364 ***

Comment 2 filip ambroz 2022-09-30 18:26:40 UTC

no problemo :)