SB2022120635 - RADIUS authentication bypass in FortiProxy SSH component
Published: December 6, 2022
Security Bulletin ID
SB2022120635
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Authentication (CVE-ID: CVE-2022-35843)
CWE-ID: CWE-287 - Improper Authentication
CVSSv4: 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/E:U/U:Amber
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.
Remediation
Install update from vendor's website.