high
7.5
CWE
401
Advisory Published
Updated

CVE-2019-6671

First published: Wed Nov 27 2019(Updated: )

On BIG-IP 15.0.0-15.0.1, 14.1.0-14.1.2, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, under certain conditions tmm may leak memory when processing packet fragments, leading to resource starvation.

Credit: f5sirt@f5.com

Affected SoftwareAffected VersionHow to fix
F5 Access Policy Manager>=13.1.0<=13.1.3.1
F5 Access Policy Manager>=14.0.0<=14.0.1
F5 Access Policy Manager>=14.1.0<=14.1.2
F5 Access Policy Manager>=15.0.0<=15.0.1
F5 BIG-IP Advanced Firewall Manager>=13.1.0<=13.1.3.1
F5 BIG-IP Advanced Firewall Manager>=14.0.0<=14.0.1
F5 BIG-IP Advanced Firewall Manager>=14.1.0<=14.1.2
F5 BIG-IP Advanced Firewall Manager>=15.0.0<=15.0.1
F5 BIG-IP Analytics>=13.1.0<=13.1.3.1
F5 BIG-IP Analytics>=14.0.0<=14.0.1
F5 BIG-IP Analytics>=14.1.0<=14.1.2
F5 BIG-IP Analytics>=15.0.0<=15.0.1
F5 BIG-IP Application Acceleration Manager>=13.1.0<=13.1.3.1
F5 BIG-IP Application Acceleration Manager>=14.0.0<=14.0.1
F5 BIG-IP Application Acceleration Manager>=14.1.0<=14.1.2
F5 BIG-IP Application Acceleration Manager>=15.0.0<=15.0.1
F5 Application Security Manager>=13.1.0<=13.1.3.1
F5 Application Security Manager>=14.0.0<=14.0.1
F5 Application Security Manager>=14.1.0<=14.1.2
F5 Application Security Manager>=15.0.0<=15.0.1
F5 BIG-IP>=13.1.0<=13.1.3.1
F5 BIG-IP>=14.0.0<=14.0.1
F5 BIG-IP>=14.1.0<=14.1.2
F5 BIG-IP>=15.0.0<=15.0.1
F5 BIG-IP Edge Gateway>=13.1.0<=13.1.3.1
F5 BIG-IP Edge Gateway>=14.0.0<=14.0.1
F5 BIG-IP Edge Gateway>=14.1.0<=14.1.2
F5 BIG-IP Edge Gateway>=15.0.0<=15.0.1
F5 BIG-IP Fraud Protection Service>=13.1.0<=13.1.3.1
F5 BIG-IP Fraud Protection Service>=14.0.0<=14.0.1
F5 BIG-IP Fraud Protection Service>=14.1.0<=14.1.2
F5 BIG-IP Fraud Protection Service>=15.0.0<=15.0.1
Riverbed SteelApp Traffic Manager>=13.0.0<=13.1.3.1
Riverbed SteelApp Traffic Manager>=14.0.0<=14.0.1
Riverbed SteelApp Traffic Manager>=14.1.0<=14.1.2
Riverbed SteelApp Traffic Manager>=15.0.0<=15.0.1
F5 BIG-IP Link Controller>=13.1.0<=13.1.3.1
F5 BIG-IP Link Controller>=14.0.0<=14.0.1
F5 BIG-IP Link Controller>=14.1.0<=14.1.2
F5 BIG-IP Link Controller>=15.0.0<=15.0.1
Riverbed SteelApp Traffic Manager>=13.1.0<=13.1.3.1
Riverbed SteelApp Traffic Manager>=14.0.0<=14.0.1
Riverbed SteelApp Traffic Manager>=14.1.0<=14.1.2
Riverbed SteelApp Traffic Manager>=15.0.0<=15.0.1
F5 BIG-IP Policy Enforcement Manager>=13.1.0<=13.1.3.1
F5 BIG-IP Policy Enforcement Manager>=14.0.0<=14.0.1
F5 BIG-IP Policy Enforcement Manager>=14.1.0<=14.1.2
F5 BIG-IP Policy Enforcement Manager>=15.0.0<=15.0.1
F5 BIG-IP WebAccelerator>=13.1.0<=13.1.3.1
F5 BIG-IP WebAccelerator>=14.0.0<=14.0.1
F5 BIG-IP WebAccelerator>=14.1.0<=14.1.2
F5 BIG-IP WebAccelerator>=15.0.0<=15.0.1

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2019-6671?

    CVE-2019-6671 is considered a medium severity vulnerability due to the potential for resource starvation caused by memory leakage in affected BIG-IP versions.

  • How do I fix CVE-2019-6671?

    To fix CVE-2019-6671, it is recommended to upgrade to a version of BIG-IP that is not affected, specifically versions later than 15.0.1, 14.1.2, 14.0.1, or 13.1.3.1.

  • Which versions of F5 BIG-IP are affected by CVE-2019-6671?

    CVE-2019-6671 affects F5 BIG-IP versions 15.0.0 to 15.0.1, 14.1.0 to 14.1.2, 14.0.0 to 14.0.1, and 13.1.0 to 13.1.3.1.

  • What are potential consequences of CVE-2019-6671 exploitation?

    Exploitation of CVE-2019-6671 can lead to resource starvation, impacting the performance and availability of services managed by affected BIG-IP devices.

  • Is there a workaround for CVE-2019-6671?

    Currently, the most effective mitigation for CVE-2019-6671 is to upgrade to a non-vulnerable version of the F5 BIG-IP software.

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