QID 43946

Date Published: 2023-01-12

QID 43946: FortiOS SSH Authentication Bypass Vulnerability (FG-IR-22-255)

An authentication bypass by assumed-immutable data vulnerability [CWE-302] in the FortiOS SSH login component may allow a remote and unauthenticated attacker to login into the device via sending specially crafted Access-Challenge response from the Radius server. Affected Versions:
FortiOS version 7.2.0 through 7.2.1
FortiOS version 7.0.0 through 7.0.7
FortiOS version 6.4.0 through 6.4.9
FortiOS version 6.2 through 6.2.12

QID Detection Logic (Authenticated):
Detection checks for vulnerable version of FortiOS.

Successful exploitation of the vulnerability may allow Improper access control.

  • CVSS V3 rated as Critical - 9.8 severity.
  • CVSS V2 rated as Medium - 5.1 severity.
  • Solution
    Fortinet has released patch addressing the vulnerability. For more information please refer to FG-IR-22-255
    Vendor References

    CVEs related to QID 43946

    Software Advisories
    Advisory ID Software Component Link
    FG-IR-22-255 URL Logo www.fortiguard.com/psirt/FG-IR-22-255