CVE-2023-22323: BIG-IP SSL OCSP Authentication profile vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-02-01 · updated 2026-06-17
Weakness: CWE-770

Description

In BIP-IP versions 17.0.x before 17.0.0.2, 16.1.x before 16.1.3.3, 15.1.x before 15.1.8.1, 14.1.x before 14.1.5.3, and all versions of 13.1.x, when OCSP authentication profile is configured on a virtual server, undisclosed requests can cause an increase in CPU resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

F5 BIG-IP APM: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.3; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2
BIG-IP: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.3; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2
F5 Big-Ip Analytics: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.3; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2
F5 Networks, Inc. BIG-IP (AAM): from 13.1.0 through 13.1.5; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 15.1.8.1, 16.1.3.3, 17.0.0.2
BIG-IP ASM: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.3; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2
F5 Big-Ip Ddos Hybrid Defender: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.3; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3 — fixed in 14.1.5.3, 15.1.8.1, 16.1.3.3
F5 BIG-IP DNS: from 14.1.0 before 14.1.5.3; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2
F5 Big-Ip Fraud Protection Service: from 13.1.0 through 13.1.5; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 15.1.8.1, 16.1.3.3, 17.0.0.2
F5 Big-Ip Link Controller: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.3; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2
F5 BIG-IP (LTM): from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.3; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2
F5 Networks, Inc. BIG-IP (PEM): from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.3; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2
F5 Big-Ip Ssl Orchestrator: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.3; from 15.1.0 before 15.1.8.1; from 16.1.0 before 16.1.3.3; from 17.0.0 before 17.0.0.2 — fixed in 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2

How to fix

Upgrade to a fixed version: F5 BIG-IP APM 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2; BIG-IP 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2; F5 Big-Ip Analytics 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2; F5 Networks, Inc. BIG-IP (AAM) 15.1.8.1, 16.1.3.3, 17.0.0.2; BIG-IP ASM 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2; F5 Big-Ip Ddos Hybrid Defender 14.1.5.3, 15.1.8.1, 16.1.3.3; F5 BIG-IP DNS 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2; F5 Big-Ip Fraud Protection Service 15.1.8.1, 16.1.3.3, 17.0.0.2; F5 Big-Ip Link Controller 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2; F5 BIG-IP (LTM) 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2; F5 Networks, Inc. BIG-IP (PEM) 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2; F5 Big-Ip Ssl Orchestrator 14.1.5.3, 15.1.8.1, 16.1.3.3, 17.0.0.2. Check the vendor advisory for mitigations.

References

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