CVE-2022-35236: HTTP2 profile vulnerability CVE-2022-35236

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-08-04 · updated 2026-06-17
Weakness: CWE-400

Description

In BIG-IP Versions 16.1.x before 16.1.2.2, 15.1.x before 15.1.6.1, and 14.1.x before 14.1.5, when an HTTP2 profile is configured on a virtual server, undisclosed traffic can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

F5 BIG-IP APM: from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2
BIG-IP: from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2
F5 Big-Ip Analytics: from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2
F5 Networks, Inc. BIG-IP (AAM): from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2
BIG-IP ASM: from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2
F5 BIG-IP DNS: from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2
F5 Big-Ip Fraud Protection Service: from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2
F5 Big-Ip Global Traffic Manager: from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2
F5 Big-Ip Link Controller: from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2
F5 BIG-IP (LTM): from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2
F5 Networks, Inc. BIG-IP (PEM): from 14.1.0 before 14.1.5; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.2.2 — fixed in 14.1.5, 15.1.6.1, 16.1.2.2

How to fix

Upgrade to a fixed version: F5 BIG-IP APM 14.1.5, 15.1.6.1, 16.1.2.2; BIG-IP 14.1.5, 15.1.6.1, 16.1.2.2; F5 Big-Ip Analytics 14.1.5, 15.1.6.1, 16.1.2.2; F5 Networks, Inc. BIG-IP (AAM) 14.1.5, 15.1.6.1, 16.1.2.2; BIG-IP ASM 14.1.5, 15.1.6.1, 16.1.2.2; F5 BIG-IP DNS 14.1.5, 15.1.6.1, 16.1.2.2; F5 Big-Ip Fraud Protection Service 14.1.5, 15.1.6.1, 16.1.2.2; F5 Big-Ip Global Traffic Manager 14.1.5, 15.1.6.1, 16.1.2.2; F5 Big-Ip Link Controller 14.1.5, 15.1.6.1, 16.1.2.2; F5 BIG-IP (LTM) 14.1.5, 15.1.6.1, 16.1.2.2; F5 Networks, Inc. BIG-IP (PEM) 14.1.5, 15.1.6.1, 16.1.2.2. Check the vendor advisory for mitigations.

References

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