Improper Authentication in FortiOS - CVE-2022-35843
Published: December 6, 2022
Vulnerability identifier: #VU69939
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-35843
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in FortiOS SSH login component when processing authentication requests if RADIUS authentication is used. A remote attacker can bypass authentication process and login into the device via sending specially crafted Access-Challenge response from the Radius server.
Affected software
FortiOS
FortiProxy
FortiProxy
How to mitigate CVE-2022-35843
Install updates from vendor's website.
FortiOS - addressed in versions 6.4.10, 7.0.8, 7.2.2
FortiProxy - addressed in versions 2.0.11, 7.0.7
FortiProxy - addressed in versions 2.0.11, 7.0.7