Path traversal in Drupal Twig

1) Path traversal

EUVDB-ID: #VU67723

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

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

Drupal: 8.0 - 9.5.0 beta1

External links

http://www.drupal.org/sa-core-2022-016

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.