CVE-2018-5542 Security feature bypass in BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, FPS, GTM, Link Controller, PEM, WebAccelerator)
Attackers can bypass HTTPS health monitor identity validation in F5 BIG-IP, potentially allowing malicious servers to be marked as healthy.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-5542?
CVE-2018-5542 is a high-severity vulnerability in F5 Big-Ip Access Policy Manager, published on 25 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
F5 BIG-IP 13.0.0-13.0.1, 12.1.0-12.1.3.6, or 11.2.1-11.6.3.2 HTTPS health monitors do not validate the identity of the monitored server.
Weakness: CWE-20
Which versions are affected by CVE-2018-5542?
It affects 13 products.
Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager, F5 Big-Ip Domain Name System and 7 more.
How do I fix CVE-2018-5542?
No fix has been published for CVE-2018-5542 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-5542 being exploited?
There is no known exploitation of CVE-2018-5542 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Ip Access Policy Manager
- CVE-2023-46747 F5 BIG-IP Configuration Utility Authentication Bypass
- CVE-2022-1388 F5 BIG-IP Missing Authentication
- CVE-2021-22986 F5 BIG-IP and BIG-IQ Centralized Management iControl REST Remote Code Execution
- CVE-2021-22991 F5 BIG-IP Traffic Management Microkernel Buffer Overflow
- CVE-2020-5902 F5 BIG-IP Traffic Management User Interface (TMUI) Remote Code Execution
Sources
Also known as GHSA-r46f-ff56-r5rx.