high
7.5
Advisory Published
Updated

CVE-2020-5891

First published: Thu Apr 30 2020(Updated: )

On BIG-IP 15.1.0-15.1.0.1, 15.0.0-15.0.1.2, and 14.1.0-14.1.2.3, undisclosed HTTP/2 requests can lead to a denial of service when sent to a virtual server configured with the Fallback Host setting and a server-side HTTP/2 profile.

Credit: f5sirt@f5.com

Affected SoftwareAffected VersionHow to fix
F5 Access Policy Manager>=14.1.0<=14.1.2.3
F5 Access Policy Manager>=15.0.0<=15.0.1.2
F5 Access Policy Manager>=15.1.0<=15.1.0.1
F5 BIG-IP Advanced Firewall Manager>=14.1.0<=14.1.2.3
F5 BIG-IP Advanced Firewall Manager>=15.0.0<=15.0.1.2
F5 BIG-IP Advanced Firewall Manager>=15.1.0<=15.1.0.1
F5 BIG-IP Analytics>=14.1.0<=14.1.2.3
F5 BIG-IP Analytics>=15.0.0<=15.0.1.2
F5 BIG-IP Analytics>=15.1.0<=15.1.0.1
F5 BIG-IP Application Acceleration Manager>=14.1.0<=14.1.2.3
F5 BIG-IP Application Acceleration Manager>=15.0.0<=15.0.1.2
F5 BIG-IP Application Acceleration Manager>=15.1.0<=15.1.0.1
F5 Application Security Manager>=14.1.0<=14.1.2.3
F5 Application Security Manager>=15.0.0<=15.0.1.2
F5 Application Security Manager>=15.1.0<=15.1.0.1
F5 BIG-IP Fraud Protection Service>=14.1.0<=14.1.2.3
F5 BIG-IP Fraud Protection Service>=15.0.0<=15.0.1.2
F5 BIG-IP Fraud Protection Service>=15.1.0<=15.1.0.1
F5 BIG-IP Link Controller>=14.1.0<=14.1.2.3
F5 BIG-IP Link Controller>=15.0.0<=15.0.1.2
F5 BIG-IP Link Controller>=15.1.0<=15.1.0.1
Riverbed SteelApp Traffic Manager>=14.1.0<=14.1.2.3
Riverbed SteelApp Traffic Manager>=15.0.0<=15.0.1.2
Riverbed SteelApp Traffic Manager>=15.1.0<=15.1.0.1
F5 BIG-IP Policy Enforcement Manager>=14.1.0<=14.1.2.3
F5 BIG-IP Policy Enforcement Manager>=15.0.0<=15.0.1.2
F5 BIG-IP Policy Enforcement Manager>=15.1.0<=15.1.0.1

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2020-5891?

    CVE-2020-5891 is classified as a denial of service vulnerability.

  • How do I fix CVE-2020-5891?

    To fix CVE-2020-5891, update to the latest patched versions of the affected F5 BIG-IP software.

  • Which versions are affected by CVE-2020-5891?

    CVE-2020-5891 affects F5 BIG-IP versions ranging from 14.1.0 to 14.1.2.3, 15.0.0 to 15.0.1.2, and 15.1.0 to 15.1.0.1.

  • Where can I find more details about CVE-2020-5891?

    More details regarding CVE-2020-5891 can be found in the database of vulnerabilities maintained by F5.

  • What is the potential impact of CVE-2020-5891?

    The potential impact of CVE-2020-5891 includes service disruption due to denial of service attacks on the affected F5 BIG-IP virtual servers.

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