QID 376051

Date Published: 2021-11-17

QID 376051: F5 BIG-IP Access Policy Manager (APM) Virtual Private Network (VPN) Vulnerability (K71891773)

The session ID is visible in the arguments of the f5vpn.exe command when VPN is launched from the browser on a Windows system. Addressing this issue requires both the client and server fixes.CVE-2021-23002

Vulnerable Component: BIG-IP APM

Affected Versions:
16.0.0 - 16.0.1
15.1.0 - 15.1.2
14.1.0 - 14.1.3
13.1.0 - 13.1.3
12.1.0 - 12.1.5
11.6.1 - 11.6.5

QID Detection Logic(Authenticated):
This QID checks for the vulnerable versions of F5 BIG-IP devices using the tmsh command.

An attacker with privileges to view the command line of the process may be able to view the session ID. If the session ID is exposed to the attacker, the attacker can use this information to launch further attacks.

  • CVSS V3 rated as Medium - 4.5 severity.
  • CVSS V2 rated as Low - 2.7 severity.
    • Solution
    The vendor has released patch, for more information please visit: K71891773Workaround:
    To mitigate this vulnerability, you can use the BIG-IP Edge Client for VPN access instead of the browser-based VPN.

    Vendor References

    CVEs related to QID 376051

    CVE-2021-23002 |
    Software Advisories
    Advisory ID Software Component Link
    K71891773 URL Logo support.f5.com/csp/article/K71891773
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