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CVE-2020-5891

HIGHCVSS 7.5/10EPSS 1.24%

Last modified

CVE-2020-5891 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
1.24%

65.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
F5Big-Ip Access Policy Manager>= 14.1.0, <= 14.1.2.3
F5Big-Ip Access Policy Manager>= 15.0.0, <= 15.0.1.2
F5Big-Ip Access Policy Manager>= 15.1.0, <= 15.1.0.1
F5Big-Ip Advanced Firewall Manager>= 14.1.0, <= 14.1.2.3
F5Big-Ip Advanced Firewall Manager>= 15.0.0, <= 15.0.1.2
F5Big-Ip Advanced Firewall Manager>= 15.1.0, <= 15.1.0.1
F5Big-Ip Analytics>= 14.1.0, <= 14.1.2.3
F5Big-Ip Analytics>= 15.0.0, <= 15.0.1.2
F5Big-Ip Analytics>= 15.1.0, <= 15.1.0.1
F5Big-Ip Application Acceleration Manager>= 14.1.0, <= 14.1.2.3
F5Big-Ip Application Acceleration Manager>= 15.0.0, <= 15.0.1.2
F5Big-Ip Application Acceleration Manager>= 15.1.0, <= 15.1.0.1
F5Big-Ip Application Security Manager>= 14.1.0, <= 14.1.2.3
F5Big-Ip Application Security Manager>= 15.0.0, <= 15.0.1.2
F5Big-Ip Application Security Manager>= 15.1.0, <= 15.1.0.1
F5Big-Ip Fraud Protection Service>= 14.1.0, <= 14.1.2.3
F5Big-Ip Fraud Protection Service>= 15.0.0, <= 15.0.1.2
F5Big-Ip Fraud Protection Service>= 15.1.0, <= 15.1.0.1
F5Big-Ip Link Controller>= 14.1.0, <= 14.1.2.3
F5Big-Ip Link Controller>= 15.0.0, <= 15.0.1.2
F5Big-Ip Link Controller>= 15.1.0, <= 15.1.0.1
F5Big-Ip Local Traffic Manager>= 14.1.0, <= 14.1.2.3
F5Big-Ip Local Traffic Manager>= 15.0.0, <= 15.0.1.2
F5Big-Ip Local Traffic Manager>= 15.1.0, <= 15.1.0.1
F5Big-Ip Policy Enforcement Manager>= 14.1.0, <= 14.1.2.3
F5Big-Ip Policy Enforcement Manager>= 15.0.0, <= 15.0.1.2
F5Big-Ip Policy Enforcement Manager>= 15.1.0, <= 15.1.0.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-5891?
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.
How severe is CVE-2020-5891?
CVE-2020-5891 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5891?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-5891?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST