CVE-2020-5876: Race Condition

Published Apr 30, 2020
·
Updated

On BIG-IP 15.0.0-15.0.1.3, 14.1.0-14.1.2.3, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, a race condition exists where mcpd and other processes may make unencrypted connection attempts to a new configuration sync peer. The race condition can occur when changing the ConfigSync IP address of a peer, adding a new peer, or when the Traffic Management Microkernel (TMM) first starts up.

Affected Software

55 affected components
F5 BIG-IP Access Policy Manager>=11.6.1<=11.6.5.1
F5 BIG-IP Access Policy Manager>=12.1.0<=12.1.5.1
F5 BIG-IP Access Policy Manager>=13.1.0<=13.1.3.3
F5 BIG-IP Access Policy Manager>=14.1.0<=14.1.2.3
F5 BIG-IP Access Policy Manager>=15.0.0<=15.1.0.3
F5 BIG-IP Advanced Firewall Manager>=11.6.1<=11.6.5.1
F5 BIG-IP Advanced Firewall Manager>=12.1.0<=12.1.5.1
F5 BIG-IP Advanced Firewall Manager>=13.1.0<=13.1.3.3
F5 BIG-IP Advanced Firewall Manager>=14.1.0<=14.1.2.3
F5 BIG-IP Advanced Firewall Manager>=15.0.0<=15.1.0.3
F5 BIG-IP Analytics>=11.6.1<=11.6.5.1
F5 BIG-IP Analytics>=12.1.0<=12.1.5.1
F5 BIG-IP Analytics>=13.1.0<=13.1.3.3
F5 BIG-IP Analytics>=14.1.0<=14.1.2.3
F5 BIG-IP Analytics>=15.0.0<=15.1.0.3
F5 Big-ip Application Acceleration Manager>=11.6.1<=11.6.5.1
F5 Big-ip Application Acceleration Manager>=12.1.0<=12.1.5.1
F5 Big-ip Application Acceleration Manager>=13.1.0<=13.1.3.3
F5 Big-ip Application Acceleration Manager>=14.1.0<=14.1.2.3
F5 Big-ip Application Acceleration Manager>=15.0.0<=15.1.0.3
F5 BIG-IP Application Security Manager>=11.6.1<=11.6.5.1
F5 BIG-IP Application Security Manager>=12.1.0<=12.1.5.1
F5 BIG-IP Application Security Manager>=13.1.0<=13.1.3.3
F5 BIG-IP Application Security Manager>=14.1.0<=14.1.2.3
F5 BIG-IP Application Security Manager>=15.0.0<=15.1.0.3
F5 Big-ip Domain Name System>=11.6.1<=11.6.5.1
F5 Big-ip Domain Name System>=12.1.0<=12.1.5.1
F5 Big-ip Domain Name System>=13.1.0<=13.1.3.3
F5 Big-ip Domain Name System>=14.1.0<=14.1.2.3
F5 Big-ip Domain Name System>=15.0.0<=15.1.0.3
F5 Big-ip Fraud Protection Service>=11.6.1<=11.6.5.1
F5 Big-ip Fraud Protection Service>=12.1.0<=12.1.5.1
F5 Big-ip Fraud Protection Service>=13.1.0<=13.1.3.3
F5 Big-ip Fraud Protection Service>=14.1.0<=14.1.2.3
F5 Big-ip Fraud Protection Service>=15.0.0<=15.1.0.3
F5 Big-ip Global Traffic Manager>=11.6.1<=11.6.5.1
F5 Big-ip Global Traffic Manager>=12.1.0<=12.1.5.1
F5 Big-ip Global Traffic Manager>=13.1.0<=13.1.3.3
F5 Big-ip Global Traffic Manager>=14.1.0<=14.1.2.3
F5 Big-ip Global Traffic Manager>=15.0.0<=15.1.0.3
F5 Big-ip Link Controller>=11.6.1<=11.6.5.1
F5 Big-ip Link Controller>=12.1.0<=12.1.5.1
F5 Big-ip Link Controller>=13.1.0<=13.1.3.3
F5 Big-ip Link Controller>=14.1.0<=14.1.2.3
F5 Big-ip Link Controller>=15.0.0<=15.1.0.3
F5 Big-ip Local Traffic Manager>=11.6.1<=11.6.5.1
F5 Big-ip Local Traffic Manager>=12.1.0<=12.1.5.1
F5 Big-ip Local Traffic Manager>=13.1.0<=13.1.3.3
F5 Big-ip Local Traffic Manager>=14.1.0<=14.1.2.3
F5 Big-ip Local Traffic Manager>=15.0.0<=15.1.0.3
F5 Big-ip Policy Enforcement Manager>=11.6.1<=11.6.5.1
F5 Big-ip Policy Enforcement Manager>=12.1.0<=12.1.5.1
F5 Big-ip Policy Enforcement Manager>=13.1.0<=13.1.3.3
F5 Big-ip Policy Enforcement Manager>=14.1.0<=14.1.2.3
F5 Big-ip Policy Enforcement Manager>=15.0.0<=15.1.0.3

Event History

Apr 30, 2020
CVE Published
via MITRE·08:30 PM
Data Sourced
via MITRE·08:30 PM
DescriptionWeakness

Frequently Asked Questions

1

What is the severity of CVE-2020-5876?

The severity of CVE-2020-5876 is classified as high due to potential unauthorized access through unencrypted connections.

2

How do I fix CVE-2020-5876?

To fix CVE-2020-5876, upgrade to the latest versions of affected F5 BIG-IP products that address the vulnerability.

3

Which versions of F5 BIG-IP are affected by CVE-2020-5876?

CVE-2020-5876 affects F5 BIG-IP versions 11.6.1 to 11.6.5.1, 12.1.0 to 12.1.5.1, 13.1.0 to 13.1.3.3, 14.1.0 to 14.1.2.3, and 15.0.0 to 15.0.1.3.

4

What processes are involved in the CVE-2020-5876 vulnerability?

The CVE-2020-5876 vulnerability involves a race condition between the mcpd process and other processes during configuration synchronization.

5

Can CVE-2020-5876 lead to data exposure?

Yes, CVE-2020-5876 may lead to data exposure due to the possibility of unencrypted connections to sync peers.

Company

Resources

Contact

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