CVE-2022-23021: Null Pointer Dereference
First published: Tue Jan 25 2022(Updated: )
On BIG-IP version 16.1.x before 16.1.2, when any of the following configurations are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate: HTTP redirect rule in an LTM policy, BIG-IP APM Access Profile, and Explicit HTTP Proxy in HTTP Profile. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Credit: f5sirt@f5.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| F5 BIG-IP Access Policy Manager | >=16.1.0<16.1.2 | |
| F5 BIG-IP Advanced Firewall Manager | >=16.1.0<16.1.2 | |
| F5 BIG-IP Analytics | >=16.1.0<16.1.2 | |
| F5 Big-ip Application Acceleration Manager | >=16.1.0<16.1.2 | |
| F5 BIG-IP Application Security Manager | >=16.1.0<16.1.2 | |
| F5 Big-ip Domain Name System | >=16.1.0<16.1.2 | |
| F5 Big-ip Fraud Protection Service | >=16.1.0<16.1.2 | |
| F5 Big-ip Global Traffic Manager | >=16.1.0<16.1.2 | |
| F5 Big-ip Link Controller | >=16.1.0<16.1.2 | |
| F5 Big-ip Local Traffic Manager | >=16.1.0<16.1.2 | |
| F5 Big-ip Policy Enforcement Manager | >=16.1.0<16.1.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-23021?
The severity of CVE-2022-23021 is high with a severity value of 7.5.
Which software versions are affected by CVE-2022-23021?
CVE-2022-23021 affects BIG-IP versions 16.1.x before 16.1.2.
How can CVE-2022-23021 be exploited?
CVE-2022-23021 can be exploited by sending undisclosed requests to a virtual server with specific configurations.
What can cause the Traffic Management Microkernel (TMM) to terminate in CVE-2022-23021?
The Traffic Management Microkernel (TMM) can terminate in CVE-2022-23021 if any of the following configurations are configured on a virtual server: HTTP redirect rule in an LTM policy, BIG-IP APM Access Profile, and Explicit HTTP Proxy in HTTP P.
Is there a fix available for CVE-2022-23021?
Yes, a fix for CVE-2022-23021 is available in BIG-IP version 16.1.2.
- collector/nvd-index
- agent/references
- agent/severity
- agent/author
- agent/type
- agent/weakness
- agent/event
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/f5
- canonical/f5 big-ip access policy manager
- version/f5 big-ip access policy manager/16.1.0
- canonical/f5 big-ip advanced firewall manager
- version/f5 big-ip advanced firewall manager/16.1.0
- canonical/f5 big-ip analytics
- version/f5 big-ip analytics/16.1.0
- canonical/f5 big-ip application acceleration manager
- version/f5 big-ip application acceleration manager/16.1.0
- canonical/f5 big-ip application security manager
- version/f5 big-ip application security manager/16.1.0
- canonical/f5 big-ip domain name system
- version/f5 big-ip domain name system/16.1.0
- canonical/f5 big-ip fraud protection service
- version/f5 big-ip fraud protection service/16.1.0
- canonical/f5 big-ip global traffic manager
- version/f5 big-ip global traffic manager/16.1.0
- canonical/f5 big-ip link controller
- version/f5 big-ip link controller/16.1.0
- canonical/f5 big-ip local traffic manager
- version/f5 big-ip local traffic manager/16.1.0
- canonical/f5 big-ip policy enforcement manager
- version/f5 big-ip policy enforcement manager/16.1.0