CVE-2019-6684: High severity f5 access policy manager vulnerability

Published Dec 23, 2019
·
Updated

On versions 15.0.0-15.0.1.1, 14.0.0-14.1.2.2, 13.1.0-13.1.3.1, 12.1.0-12.1.5, and 11.5.2-11.6.5.1, under certain conditions, a multi-bladed BIG-IP Virtual Clustered Multiprocessing (vCMP) may drop broadcast packets when they are rebroadcast to the vCMP guest secondary blades. An attacker can leverage the fragmented broadcast IP packets to perform any type of fragmentation-based attack.

Affected Software

55 affected components
F5 BIG-IP Access Policy Manager>=11.5.2<=11.6.5
F5 BIG-IP Access Policy Manager>=12.1.0<=12.1.5
F5 BIG-IP Access Policy Manager>=13.0.0<13.1.3.2
F5 BIG-IP Access Policy Manager>=14.0.0<14.1.2.3
F5 BIG-IP Access Policy Manager>=15.0.0<15.1.0
F5 BIG-IP Advanced Firewall Manager>=11.5.2<=11.6.5
F5 BIG-IP Advanced Firewall Manager>=12.1.0<=12.1.5
F5 BIG-IP Advanced Firewall Manager>=13.0.0<13.1.3.2
F5 BIG-IP Advanced Firewall Manager>=14.0.0<14.1.2.3
F5 BIG-IP Advanced Firewall Manager>=15.0.0<15.1.0
F5 BIG-IP Analytics>=11.5.2<=11.6.5
F5 BIG-IP Analytics>=12.1.0<=12.1.5
F5 BIG-IP Analytics>=13.0.0<13.1.3.2
F5 BIG-IP Analytics>=14.0.0<14.1.2.3
F5 BIG-IP Analytics>=15.0.0<15.1.0
F5 Big-ip Application Acceleration Manager>=11.5.2<=11.6.5
F5 Big-ip Application Acceleration Manager>=12.1.0<=12.1.5
F5 Big-ip Application Acceleration Manager>=13.0.0<13.1.3.2
F5 Big-ip Application Acceleration Manager>=14.0.0<14.1.2.3
F5 Big-ip Application Acceleration Manager>=15.0.0<15.1.0
F5 BIG-IP Application Security Manager>=11.5.2<=11.6.5
F5 BIG-IP Application Security Manager>=12.1.0<=12.1.5
F5 BIG-IP Application Security Manager>=13.0.0<13.1.3.2
F5 BIG-IP Application Security Manager>=14.0.0<14.1.2.3
F5 BIG-IP Application Security Manager>=15.0.0<15.1.0
F5 Big-ip Domain Name System>=11.5.2<=11.6.5
F5 Big-ip Domain Name System>=12.1.0<=12.1.5
F5 Big-ip Domain Name System>=13.0.0<13.1.3.2
F5 Big-ip Domain Name System>=14.0.0<14.1.2.3
F5 Big-ip Domain Name System>=15.0.0<15.1.0
F5 Big-ip Fraud Protection Service>=11.5.2<=11.6.5
F5 Big-ip Fraud Protection Service>=12.1.0<=12.1.5
F5 Big-ip Fraud Protection Service>=13.0.0<13.1.3.2
F5 Big-ip Fraud Protection Service>=14.0.0<14.1.2.3
F5 Big-ip Fraud Protection Service>=15.0.0<15.1.0
F5 Big-ip Global Traffic Manager>=11.5.2<=11.6.5
F5 Big-ip Global Traffic Manager>=12.1.0<=12.1.5
F5 Big-ip Global Traffic Manager>=13.0.0<13.1.3.2
F5 Big-ip Global Traffic Manager>=14.0.0<14.1.2.3
F5 Big-ip Global Traffic Manager>=15.0.0<15.1.0
F5 Big-ip Link Controller>=11.5.2<=11.6.5
F5 Big-ip Link Controller>=12.1.0<=12.1.5
F5 Big-ip Link Controller>=13.0.0<13.1.3.2
F5 Big-ip Link Controller>=14.0.0<14.1.2.3
F5 Big-ip Link Controller>=15.0.0<15.1.0
F5 Big-ip Local Traffic Manager>=11.5.2<=11.6.5
F5 Big-ip Local Traffic Manager>=12.1.0<=12.1.5
F5 Big-ip Local Traffic Manager>=13.0.0<13.1.3.2
F5 Big-ip Local Traffic Manager>=14.0.0<14.1.2.3
F5 Big-ip Local Traffic Manager>=15.0.0<15.1.0
F5 Big-ip Policy Enforcement Manager>=11.5.2<=11.6.5
F5 Big-ip Policy Enforcement Manager>=12.1.0<=12.1.5
F5 Big-ip Policy Enforcement Manager>=13.0.0<13.1.3.2
F5 Big-ip Policy Enforcement Manager>=14.0.0<14.1.2.3
F5 Big-ip Policy Enforcement Manager>=15.0.0<15.1.0

Event History

Dec 23, 2019
CVE Published
via MITRE·05:23 PM
Data Sourced
via MITRE·05:23 PM
DescriptionWeakness

Frequently Asked Questions

1

What versions of F5 BIG-IP are affected by CVE-2019-6684?

CVE-2019-6684 affects F5 BIG-IP versions 15.0.0-15.0.1.1, 14.0.0-14.1.2.2, 13.1.0-13.1.3.1, 12.1.0-12.1.5, and 11.5.2-11.6.5.1.

2

What issue does CVE-2019-6684 introduce in BIG-IP systems?

CVE-2019-6684 may cause a multi-bladed BIG-IP Virtual Clustered Multiprocessing (vCMP) system to drop broadcast packets under certain conditions.

3

How can CVE-2019-6684 be mitigated in affected systems?

Mitigation for CVE-2019-6684 involves upgrading affected F5 BIG-IP software to versions that do not exhibit the vulnerability.

4

Is there a workaround for CVE-2019-6684?

There are no specific workarounds available for CVE-2019-6684; upgrading to a fixed version is recommended.

5

What steps should be taken if my organization is using an affected F5 BIG-IP version in relation to CVE-2019-6684?

Organizations should immediately plan to upgrade to a fixed version of F5 BIG-IP to address the risk associated with CVE-2019-6684.

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