Security restrictions bypass in Craft CMS

1) Path traversal

EUVDB-ID: #VU79808

Risk: Low

CVSSv4.0: 4.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-40035

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

Exploit availability: No

Description

The vulnerability allows a remote user to upload files to arbitrary locations.

The vulnerability exists due to input validation error within the validatePath function. A remote user can upload a malicious PHP template file and execute it on the server.

Successful exploitation requires "ALLOW_ADMIN_CHANGES=true" configuration.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Craft CMS: 3.0.0 - 4.4.14

CPE2.3

• cpe:2.3:a:pixel_and_tonic:craft_cms:3.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:pixel_and_tonic:craft_cms:3.0.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:pixel_and_tonic:craft_cms:3.0.0.2:*:*:*:*:*:*:*

External links

https://github.com/craftcms/cms/security/advisories/GHSA-44wr-rmwq-3phw

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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