Security restrictions bypass in Symfony Twig

Published: 2022-03-24 | Updated: 2022-07-18

Risk	High
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2022-23614
CWE-ID	CWE-254
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software	Twig Web applications / CMS
Vendor	Symfony

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Security features bypass

EUVDB-ID: #VU61609

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-23614

CWE-ID: CWE-254 - Security Features

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to missing security restrictions for non closures in "sort" filter when using a sandbox mode. A remote attacker can pass specially crafted data to the application and execute arbitrary PHP code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Twig: 2.0.0 - 3.3.7

CPE2.3

External links

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. However, proof of concept for this vulnerability is available.