CVE-2021-23000

Severity

75%

Complexity

39%

Confidentiality

60%

On BIG-IP versions 13.1.3.4-13.1.3.6 and 12.1.5.2, if the tmm.http.rfc.enforcement BigDB key is enabled in a BIG-IP system, or the Bad host header value is checked in the AFM HTTP security profile associated with a virtual server, in rare instances, a specific sequence of malicious requests may cause TMM to restart. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

CVSS 3.1 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 4.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P).

Overview

Type

F5

First reported 3 years ago

2021-03-31 18:15:00

Last updated 3 years ago

2021-04-05 18:19:00

Affected Software

F5 Big-IP Access Policy Manager (APM)

F5 Big-IP Advanced Firewall Manager (AFM)

F5 Big-IP Analytics

F5 Big-IP Application Acceleration Manager (AAM)

F5 Big-IP Application Security Manager (ASM)

F5 Big-IP Domain Name System (DNS)

F5 Big-IP Fraud Protection Service (FPS)

F5 Big-IP Global Traffic Manager (GTM)

F5 Big-IP Link Controller

F5 Networks Big-IP Local Traffic Manager (LTM)

F5 Big-IP Policy Enforcement Manager (PEM)

References

https://support.f5.com/csp/article/K34441555

https://support.f5.com/csp/article/K34441555

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