high
7.5
Advisory Published
Updated

CVE-2020-5918

First published: Wed Aug 26 2020(Updated: )

In BIG-IP versions 15.1.0-15.1.0.4, 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, the Traffic Management Microkernel (TMM) may stop responding when processing Stream Control Transmission Protocol (SCTP) traffic when traffic volume is high. This vulnerability affects TMM by way of a virtual server configured with an SCTP profile.

Credit: f5sirt@f5.com

Affected SoftwareAffected VersionHow to fix
F5 Access Policy Manager>=11.6.1<11.6.5.2
F5 Access Policy Manager>=12.1.0<12.1.5.2
F5 Access Policy Manager>=13.1.0<13.1.3.4
F5 Access Policy Manager>=14.1.0<14.1.2.5
F5 Access Policy Manager>=15.0.0<15.0.1.4
F5 Access Policy Manager>=15.1.0<15.1.0.5
F5 BIG-IP Advanced Firewall Manager>=11.6.1<11.6.5.2
F5 BIG-IP Advanced Firewall Manager>=12.1.0<12.1.5.2
F5 BIG-IP Advanced Firewall Manager>=13.1.0<13.1.3.4
F5 BIG-IP Advanced Firewall Manager>=14.1.0<14.1.2.5
F5 BIG-IP Advanced Firewall Manager>=15.0.0<15.0.1.4
F5 BIG-IP Advanced Firewall Manager>=15.1.0<15.1.0.5
F5 BIG-IP Analytics>=11.6.1<11.6.5.2
F5 BIG-IP Analytics>=12.1.0<12.1.5.2
F5 BIG-IP Analytics>=13.1.0<13.1.3.4
F5 BIG-IP Analytics>=14.1.0<14.1.2.5
F5 BIG-IP Analytics>=15.0.0<15.0.1.4
F5 BIG-IP Analytics>=15.1.0<15.1.0.5
F5 BIG-IP Application Acceleration Manager>=11.6.1<11.6.5.2
F5 BIG-IP Application Acceleration Manager>=12.1.0<12.1.5.2
F5 BIG-IP Application Acceleration Manager>=13.1.0<13.1.3.4
F5 BIG-IP Application Acceleration Manager>=14.1.0<14.1.2.5
F5 BIG-IP Application Acceleration Manager>=15.0.0<15.0.1.4
F5 BIG-IP Application Acceleration Manager>=15.1.0<15.1.0.5
F5 Application Security Manager>=11.6.1<11.6.5.2
F5 Application Security Manager>=12.1.0<12.1.5.2
F5 Application Security Manager>=13.1.0<13.1.3.4
F5 Application Security Manager>=14.1.0<14.1.2.5
F5 Application Security Manager>=15.0.0<15.0.1.4
F5 Application Security Manager>=15.1.0<15.1.0.5
F5 BIG-IP>=11.6.1<11.6.5.2
F5 BIG-IP>=12.1.0<12.1.5.2
F5 BIG-IP>=13.1.0<13.1.3.4
F5 BIG-IP>=14.1.0<14.1.2.5
F5 BIG-IP>=15.0.0<15.0.1.4
F5 BIG-IP>=15.1.0<15.1.0.5
F5 BIG-IP Fraud Protection Service>=11.6.1<11.6.5.2
F5 BIG-IP Fraud Protection Service>=12.1.0<12.1.5.2
F5 BIG-IP Fraud Protection Service>=13.1.0<13.1.3.4
F5 BIG-IP Fraud Protection Service>=14.1.0<14.1.2.5
F5 BIG-IP Fraud Protection Service>=15.0.0<15.0.1.4
F5 BIG-IP Fraud Protection Service>=15.1.0<15.1.0.5
Riverbed SteelApp Traffic Manager>=11.6.1<11.6.5.2
Riverbed SteelApp Traffic Manager>=12.1.0<12.1.5.2
Riverbed SteelApp Traffic Manager>=13.1.0<13.1.3.4
Riverbed SteelApp Traffic Manager>=14.1.0<14.1.2.5
Riverbed SteelApp Traffic Manager>=15.0.0<15.0.1.4
Riverbed SteelApp Traffic Manager>=15.1.0<15.1.0.5
F5 BIG-IP Link Controller>=11.6.1<11.6.5.2
F5 BIG-IP Link Controller>=12.1.0<12.1.5.2
F5 BIG-IP Link Controller>=13.1.0<13.1.3.4
F5 BIG-IP Link Controller>=14.1.0<14.1.2.5
F5 BIG-IP Link Controller>=15.0.0<15.0.1.4
F5 BIG-IP Link Controller>=15.1.0<15.1.0.5
Riverbed SteelApp Traffic Manager>=11.6.1<11.6.5.2
Riverbed SteelApp Traffic Manager>=12.1.0<12.1.5.2
Riverbed SteelApp Traffic Manager>=13.1.0<13.1.3.4
Riverbed SteelApp Traffic Manager>=14.1.0<14.1.2.5
Riverbed SteelApp Traffic Manager>=15.0.0<15.0.1.4
Riverbed SteelApp Traffic Manager>=15.1.0<15.1.0.5
F5 BIG-IP Policy Enforcement Manager>=11.6.1<11.6.5.2
F5 BIG-IP Policy Enforcement Manager>=12.1.0<12.1.5.2
F5 BIG-IP Policy Enforcement Manager>=13.1.0<13.1.3.4
F5 BIG-IP Policy Enforcement Manager>=14.1.0<14.1.2.5
F5 BIG-IP Policy Enforcement Manager>=15.0.0<15.0.1.4
F5 BIG-IP Policy Enforcement Manager>=15.1.0<15.1.0.5

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2020-5918?

    CVE-2020-5918 is classified as a high severity vulnerability that can cause the Traffic Management Microkernel to become unresponsive under high SCTP traffic.

  • What versions of BIG-IP are affected by CVE-2020-5918?

    CVE-2020-5918 affects multiple versions of BIG-IP including those from 11.6.1 to 15.1.0.4.

  • How do I fix CVE-2020-5918?

    To resolve CVE-2020-5918, upgrade to the latest patched version of BIG-IP that is beyond the vulnerable range specified.

  • What is the impact of exploiting CVE-2020-5918?

    Exploiting CVE-2020-5918 can lead to a denial of service, affecting the availability of services managed by BIG-IP.

  • Is there a workaround for CVE-2020-5918?

    Currently, the recommended approach is to upgrade to a secure version, as there are no specific workarounds provided for CVE-2020-5918.

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