SB2024111362 - Path traversal in Craft CMS

Description

This security bulletin contains information about 1 vulnerability.

1) Path traversal (CVE-ID: CVE-2024-52293)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to improper path normalization in FileHelper::absolutePath when validating filesystem paths and rendering Twig templates. A remote privileged user can create a local filesystem path that bypasses system directory checks and upload a crafted Twig template to execute arbitrary code.

Exploitation requires post-authentication access and ALLOW_ADMIN_CHANGES to be enabled.

Remediation

Install update from vendor's website.

References

• https://github.com/craftcms/cms/security/advisories/GHSA-f3cw-hg6r-chfv
• https://github.com/advisories/GHSA-f3cw-hg6r-chfv