Strix
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CVE-2021-23039

HIGHCVSS 7.5/10EPSS 0.92%

Last modified

CVE-2021-23039 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.2.8, and all versions of 13.1.x and 12.1.x, when IPSec is configured on a BIG-IP system, undisclosed requests from an authorized remote (IPSec) peer, which already has a negotiated Security Association, can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.2.8, and all versions of 13.1.x and 12.1.x, when IPSec is configured on a BIG-IP system, undisclosed requests from an authorized remote (IPSec) peer, which already has a negotiated Security Association, can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
0.92%

55.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
F5Big-Ip Access Policy Manager>= 12.1.0, <= 12.1.6
F5Big-Ip Access Policy Manager>= 13.1.0, <= 13.1.4
F5Big-Ip Access Policy Manager>= 14.1.0, < 14.1.2.8
F5Big-Ip Access Policy Manager>= 15.1.0, < 15.1.3
F5Big-Ip Access Policy Manager>= 16.0.0, < 16.0.1.2
F5Big-Ip Advanced Firewall Manager>= 12.1.0, <= 12.1.6
F5Big-Ip Advanced Firewall Manager>= 13.1.0, <= 13.1.4
F5Big-Ip Advanced Firewall Manager>= 14.1.0, < 14.1.2.8
F5Big-Ip Advanced Firewall Manager>= 15.1.0, < 15.1.3
F5Big-Ip Advanced Firewall Manager>= 16.0.0, < 16.0.1.2
F5Big-Ip Analytics>= 12.1.0, <= 12.1.6
F5Big-Ip Analytics>= 13.1.0, <= 13.1.4
F5Big-Ip Analytics>= 14.1.0, < 14.1.2.8
F5Big-Ip Analytics>= 15.1.0, < 15.1.3
F5Big-Ip Analytics>= 16.0.0, < 16.0.1.2
F5Big-Ip Application Acceleration Manager>= 12.1.0, <= 12.1.6
F5Big-Ip Application Acceleration Manager>= 13.1.0, <= 13.1.4
F5Big-Ip Application Acceleration Manager>= 14.1.0, < 14.1.2.8
F5Big-Ip Application Acceleration Manager>= 15.1.0, < 15.1.3
F5Big-Ip Application Acceleration Manager>= 16.0.0, < 16.0.1.2
F5Big-Ip Application Security Manager>= 12.1.0, <= 12.1.6
F5Big-Ip Application Security Manager>= 13.1.0, <= 13.1.4
F5Big-Ip Application Security Manager>= 14.1.0, < 14.1.2.8
F5Big-Ip Application Security Manager>= 15.1.0, < 15.1.3
F5Big-Ip Application Security Manager>= 16.0.0, < 16.0.1.2
F5Big-Ip Domain Name System>= 12.1.0, <= 12.1.6
F5Big-Ip Domain Name System>= 13.1.0, <= 13.1.4
F5Big-Ip Domain Name System>= 14.1.0, < 14.1.2.8
F5Big-Ip Domain Name System>= 15.1.0, < 15.1.3
F5Big-Ip Domain Name System>= 16.0.0, < 16.0.1.2
F5Big-Ip Fraud Protection Service>= 12.1.0, <= 12.1.6
F5Big-Ip Fraud Protection Service>= 13.1.0, <= 13.1.4
F5Big-Ip Fraud Protection Service>= 14.1.0, < 14.1.2.8
F5Big-Ip Fraud Protection Service>= 15.1.0, < 15.1.3
F5Big-Ip Fraud Protection Service>= 16.0.0, < 16.0.1.2
F5Big-Ip Global Traffic Manager>= 12.1.0, <= 12.1.6
F5Big-Ip Global Traffic Manager>= 13.1.0, <= 13.1.4
F5Big-Ip Global Traffic Manager>= 14.1.0, < 14.1.2.8
F5Big-Ip Global Traffic Manager>= 15.1.0, < 15.1.3
F5Big-Ip Global Traffic Manager>= 16.0.0, < 16.0.1.2
F5Big-Ip Link Controller>= 12.1.0, <= 12.1.6
F5Big-Ip Link Controller>= 13.1.0, <= 13.1.4
F5Big-Ip Link Controller>= 14.1.0, < 14.1.2.8
F5Big-Ip Link Controller>= 15.1.0, < 15.1.3
F5Big-Ip Link Controller>= 16.0.0, < 16.0.1.2
F5Big-Ip Local Traffic Manager>= 12.1.0, <= 12.1.6
F5Big-Ip Local Traffic Manager>= 13.1.0, <= 13.1.4
F5Big-Ip Local Traffic Manager>= 14.1.0, < 14.1.2.8
F5Big-Ip Local Traffic Manager>= 15.1.0, < 15.1.3
F5Big-Ip Local Traffic Manager>= 16.0.0, < 16.0.1.2

Showing 50 of 55 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-23039?
On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.2.8, and all versions of 13.1.x and 12.1.x, when IPSec is configured on a BIG-IP system, undisclosed requests from an authorized remote (IPSec) peer, which already has a negotiated Security Association, can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
How severe is CVE-2021-23039?
CVE-2021-23039 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23039?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23039?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST