CVE-2023-41373: BIG-IP Configuration Utility vulnerability

Severity: critical (CVSS 9.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-10 · updated 2026-06-17
Weakness: CWE-22

Description

A directory traversal vulnerability exists in the BIG-IP Configuration Utility that may allow an authenticated attacker to execute commands on the BIG-IP system. For BIG-IP system running in Appliance mode, a successful exploit can allow the attacker to cross a security boundary. 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 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
BIG-IP: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Advanced Web Application Firewall: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Analytics: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Networks, Inc. BIG-IP (AAM): from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
BIG-IP ASM: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Application Visibility And Reporting: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Carrier-Grade Nat: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Ddos Hybrid Defender: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 BIG-IP DNS: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Fraud Protection Service: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Global Traffic Manager: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Link Controller: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 BIG-IP (LTM): from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Networks, Inc. BIG-IP (PEM): from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Ssl Orchestrator: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Webaccelerator: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3
F5 Big-Ip Websafe: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.6; from 15.1.0 before 15.1.10.2; from 16.1.0 before 16.1.4.1; from 17.1.0 before 17.1.0.3 — fixed in 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3

How to fix

Upgrade to a fixed version: F5 BIG-IP APM 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; BIG-IP 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; F5 Big-Ip Advanced Web Application Firewall 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; F5 Big-Ip Analytics 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; F5 Networks, Inc. BIG-IP (AAM) 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; BIG-IP ASM 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; F5 Big-Ip Application Visibility And Reporting 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; F5 Big-Ip Carrier-Grade Nat 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; F5 Big-Ip Ddos Hybrid Defender 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; F5 BIG-IP DNS 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; F5 Big-Ip Fraud Protection Service 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3; F5 Big-Ip Global Traffic Manager 14.1.5.6, 15.1.10.2, 16.1.4.1, 17.1.0.3. Check the vendor advisory for mitigations.

References

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