Path traversal in Twig

1) Path traversal

EUVDB-ID: #VU67723

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-39261

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences when loading templates. A remote attacker can use the "source" or "include" statement to read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Twig: 1.0.0 - 3.4.2

CPE2.3

• cpe:2.3:a:symfony:twig:1.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:symfony:twig:1.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:symfony:twig:1.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:symfony:twig:1.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:symfony:twig:1.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:symfony:twig:1.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:symfony:twig:1.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:symfony:twig:1.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:symfony:twig:1.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:symfony:twig:1.6.0:*:*:*:*:*:*:*

External links

https://github.com/twigphp/Twig/commit/35f3035c5deb0041da7b84daf02dea074ddc7a0b
https://github.com/twigphp/Twig/security/advisories/GHSA-52m2-vc4m-jj33

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.