CVE-2021-23034: Input Validation
First published: Tue Sep 14 2021(Updated: )
On BIG-IP version 16.x before 16.1.0 and 15.1.x before 15.1.3.1, when a DNS profile using a DNS cache resolver is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) process to terminate. 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 Access Policy Manager | >=15.1.0<15.1.3.1 | |
| F5 Access Policy Manager | >=16.0.0<16.1.0 | |
| F5 BIG-IP Advanced Firewall Manager | >=15.1.0<15.1.3.1 | |
| F5 BIG-IP Advanced Firewall Manager | >=16.0.0<16.1.0 | |
| F5 BIG-IP Analytics | >=15.1.0<15.1.3.1 | |
| F5 BIG-IP Analytics | >=16.0.0<16.1.0 | |
| F5 BIG-IP Application Acceleration Manager | >=15.1.0<15.1.3.1 | |
| F5 BIG-IP Application Acceleration Manager | >=16.0.0<16.1.0 | |
| F5 Application Security Manager | >=15.1.0<15.1.3.1 | |
| F5 Application Security Manager | >=16.0.0<16.1.0 | |
| F5 BIG-IP | >=15.1.0<15.1.3.1 | |
| F5 BIG-IP | >=16.0.0<16.1.0 | |
| F5 BIG-IP Fraud Protection Service | >=15.1.0<15.1.3.1 | |
| F5 BIG-IP Fraud Protection Service | >=16.0.0<16.1.0 | |
| Riverbed SteelApp Traffic Manager | >=15.1.0<15.1.3.1 | |
| Riverbed SteelApp Traffic Manager | >=16.0.0<16.1.0 | |
| F5 BIG-IP Link Controller | >=15.1.0<15.1.3.1 | |
| F5 BIG-IP Link Controller | >=16.0.0<16.1.0 | |
| Riverbed SteelApp Traffic Manager | >=15.1.0<15.1.3.1 | |
| Riverbed SteelApp Traffic Manager | >=16.0.0<16.1.0 | |
| F5 BIG-IP Policy Enforcement Manager | >=15.1.0<15.1.3.1 | |
| F5 BIG-IP Policy Enforcement Manager | >=16.0.0<16.1.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-23034?
The severity of CVE-2021-23034 is considered high due to the potential for the Traffic Management Microkernel process to terminate.
How do I fix CVE-2021-23034?
To mitigate CVE-2021-23034, upgrade to F5 BIG-IP version 15.1.3.1 or later, or 16.1.0 or later.
What products are affected by CVE-2021-23034?
Affected products include various F5 BIG-IP modules such as Access Policy Manager and Local Traffic Manager across specific versions.
What happens if CVE-2021-23034 is exploited?
If exploited, CVE-2021-23034 can cause the termination of the TMM process, which may disrupt service availability.
Is CVE-2021-23034 being actively exploited in the wild?
As of now, there are no confirmed reports suggesting that CVE-2021-23034 is being actively exploited in the wild.
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- agent/references
- agent/weakness
- agent/author
- agent/description
- agent/event
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/f5
- canonical/f5 access policy manager
- version/f5 access policy manager/15.1.0
- version/f5 access policy manager/16.0.0
- canonical/f5 big-ip advanced firewall manager
- version/f5 big-ip advanced firewall manager/15.1.0
- version/f5 big-ip advanced firewall manager/16.0.0
- canonical/f5 big-ip analytics
- version/f5 big-ip analytics/15.1.0
- version/f5 big-ip analytics/16.0.0
- canonical/f5 big-ip application acceleration manager
- version/f5 big-ip application acceleration manager/15.1.0
- version/f5 big-ip application acceleration manager/16.0.0
- canonical/f5 application security manager
- version/f5 application security manager/15.1.0
- version/f5 application security manager/16.0.0
- canonical/f5 big-ip
- version/f5 big-ip/15.1.0
- version/f5 big-ip/16.0.0
- canonical/f5 big-ip fraud protection service
- version/f5 big-ip fraud protection service/15.1.0
- version/f5 big-ip fraud protection service/16.0.0
- canonical/riverbed steelapp traffic manager
- version/riverbed steelapp traffic manager/15.1.0
- version/riverbed steelapp traffic manager/16.0.0
- canonical/f5 big-ip link controller
- version/f5 big-ip link controller/15.1.0
- version/f5 big-ip link controller/16.0.0
- canonical/f5 big-ip policy enforcement manager
- version/f5 big-ip policy enforcement manager/15.1.0
- version/f5 big-ip policy enforcement manager/16.0.0