Zero-day vulnerability in FortiOS

Path traversal
CVE-2022-41328

Vulnerability details

Advisory: SB2023030925 - Privilege escalation in FortiOS

Vulnerable component: FortiOS

CVE-ID: CVE-2022-41328

CVSSv3 score: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:H/RL:O/RC:C

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

Description:

The vulnerability allows a local user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing certain CLI command. A local user can read and write arbitrary files on the system.

Note, the vulnerability is being actively exploited in the wild.

External links:

https://www.fortinet.com/blog/psirt-blogs/fg-ir-22-369-psirt-analysis

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.