CVE-2020-5871

High

Description

On BIG-IP 14.1.0-14.1.2.3, undisclosed requests can lead to a denial of service (DoS) when sent to BIG-IP HTTP/2 virtual servers. The problem can occur when ciphers, which have been blacklisted by the HTTP/2 RFC, are used on backend servers. This is a data-plane issue. There is no control-plane exposure.

SeverityHigh
CVSS7.5
Exploit probability—
ProductF5 Big-ip Access Policy Manager
PublishedApr 30, 2020
First seenApr 30, 2020

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
f5 big-ip_access_policy_manager14.1.0 ≤ v ≤ 14.1.2.3—
f5 big-ip_advanced_firewall_manager14.1.0 ≤ v ≤ 14.1.2.3—
f5 big-ip_analytics14.1.0 ≤ v ≤ 14.1.2.3—
f5 big-ip_application_acceleration_manager14.1.0 ≤ v ≤ 14.1.2.3—
f5 big-ip_application_security_manager14.1.0 ≤ v ≤ 14.1.2.3—
f5 big-ip_domain_name_system14.1.0 ≤ v ≤ 14.1.2.3—
f5 big-ip_fraud_protection_service14.1.0 ≤ v ≤ 14.1.2.3—
f5 big-ip_global_traffic_manager14.1.0 ≤ v ≤ 14.1.2.3—
f5 big-ip_link_controller14.1.0 ≤ v ≤ 14.1.2.3—
f5 big-ip_local_traffic_manager14.1.0 ≤ v ≤ 14.1.2.3—
f5 big-ip_policy_enforcement_manager14.1.0 ≤ v ≤ 14.1.2.3—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.