CVE-2020-5891

HIGH

F5 BIG-IP 14.1.0-14.1.2.3, 15.0.0-15.0.1.2, 15.1.0-15.1.0.1 - Denial of Service via HTTP/2 Requests to Fallback Host

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_confirm
https://support.f5.com/csp/article/K58494243

Scores

CVSS v3 7.5
EPSS 0.0065
EPSS Percentile 71.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (9)
f5/big-ip_access_policy_manager 14.1.0 - 14.1.2.3
f5/big-ip_advanced_firewall_manager 14.1.0 - 14.1.2.3
f5/big-ip_analytics 14.1.0 - 14.1.2.3
f5/big-ip_application_acceleration_manager 14.1.0 - 14.1.2.3
f5/big-ip_application_security_manager 14.1.0 - 14.1.2.3
f5/big-ip_fraud_protection_service 14.1.0 - 14.1.2.3
f5/big-ip_link_controller 14.1.0 - 14.1.2.3
f5/big-ip_local_traffic_manager 14.1.0 - 14.1.2.3
f5/big-ip_policy_enforcement_manager 14.1.0 - 14.1.2.3
Published Apr 30, 2020
Tracked Since Feb 18, 2026