QID 376039

Date Published: 2022-01-24

QID 376039: F5 BIG-IP Application Security Manager (ASM), Local Traffic Manager (LTM), Access Policy Manager (APM) Open Secure Sockets Layer (OpenSSL) Vulnerability (K42910051)

OpenSSL provides a function GENERAL_NAME_cmp which compares different instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a possible denial of service attack. Fixed in OpenSSL 1.0.2x (Affected 1.0.2-1.0.2w).CVE-2020-1971

Vulnerable Component: BIG-IP ASM,LTM,APM

Affected Versions:
16.0.0 - 16.1.1
15.1.0 - 15.1.4
14.1.0 - 14.1.4
13.1.0 - 13.1.4
12.1.0 - 12.1.5
11.6.1 - 11.6.5
16.0.0 - 16.1.0

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

Note: Advisory has different affected versions for different affected products. This QID checks for versions having Management port (CRL checking) as a vulnerable component.

An attacker may cause a NULL pointer dereference and produce a core file, leading to a possible denial-of-service (DOS) attack.

  • CVSS V3 rated as Medium - 5.9 severity.
  • CVSS V2 rated as Medium - 4.3 severity.
    • Solution
    The vendor has released patch, for more information please visit: K42910051
    Vendor References

    CVEs related to QID 376039

    CVE-2020-1971 |
    Software Advisories
    Advisory ID Software Component Link
    K42910051 URL Logo support.f5.com/csp/article/K42910051
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