CVE-2020-5871

published 2020-04-30

CVE-2020-5871: 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…

Priority P3 34 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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.

Affected

23 ranges

Vendor	Product	Version range	Fixed in
f5	big-ip_aam	—	—
f5	big-ip_access_policy_manager	—	—
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_afm	—	—
f5	big-ip_analytics	—	—
f5	big-ip_analytics	14.1.0 – 14.1.2.3	—
f5	big-ip_apm	—	—
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_asm	—	—
f5	big-ip_dns	—	—
f5	big-ip_domain_name_system	14.1.0 – 14.1.2.3	—
f5	big-ip_fps	—	—
f5	big-ip_fraud_protection_service	14.1.0 – 14.1.2.3	—
f5	big-ip_global_traffic_manager	14.1.0 – 14.1.2.3	—
f5	big-ip_gtm	—	—
f5	big-ip_link_controller	—	—
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_ltm	—	—
f5	big-ip_pem	—	—
f5	big-ip_policy_enforcement_manager	14.1.0 – 14.1.2.3	—

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v2.0 5.0 MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.