CVE-2023-38138: BIG-IP Configuration utility vulnerability

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-08-02 · updated 2026-06-17
Weakness: CWE-79

Description

A reflected cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP Configuration utility which allows an attacker to run JavaScript in the context of the currently logged-in user. 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 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
BIG-IP: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Advanced Web Application Firewall: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Analytics: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Networks, Inc. BIG-IP (AAM): from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
BIG-IP ASM: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Application Visibility And Reporting: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Carrier-Grade Nat: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Ddos Hybrid Defender: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 BIG-IP DNS: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Edge Gateway: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Fraud Protection Service: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Global Traffic Manager: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Link Controller: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0
F5 BIG-IP (LTM): from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Networks, Inc. BIG-IP (PEM): from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Ssl Orchestrator: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Webaccelerator: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2
F5 Big-Ip Websafe: from 13.1.0 through 13.1.5; from 14.1.0 before 14.1.5.5; from 15.1.0 before 15.1.9.1; from 16.1.0 before 16.1.3.5; from 17.0.0 before 17.1.0.2 — fixed in 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2

How to fix

Upgrade to a fixed version: F5 BIG-IP APM 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; BIG-IP 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; F5 Big-Ip Advanced Web Application Firewall 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; F5 Big-Ip Analytics 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; F5 Networks, Inc. BIG-IP (AAM) 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; BIG-IP ASM 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; F5 Big-Ip Application Visibility And Reporting 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; F5 Big-Ip Carrier-Grade Nat 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; F5 Big-Ip Ddos Hybrid Defender 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; F5 BIG-IP DNS 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; F5 Big-Ip Edge Gateway 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2; F5 Big-Ip Fraud Protection Service 14.1.5.5, 15.1.9.1, 16.1.3.5, 17.1.0.2. Check the vendor advisory for mitigations.

References

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