SB20230821232 - Security restrictions bypass in Craft CMS
Published: August 21, 2023
Security Bulletin ID
SB20230821232
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Path traversal (CVE-ID: CVE-2023-40035)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: 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
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.
Remediation
Install update from vendor's website.