CVE-2018-5514 Denial of service in BIG-IP (LTM, AAM, AFM, APM, ASM, Link Controller, PEM, WebAccelerator, WebSafe)

High 7.5 Published 2 May 2018 Updated 16 Sep 2024

Attackers can cause denial of service on F5 BIG-IP devices via malicious HTTP/2 requests when the HTTP2 profile is enabled.

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-2018-5514?

CVE-2018-5514 is a high-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 2 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

On F5 BIG-IP 13.1.0-13.1.0.5, maliciously crafted HTTP/2 request frames can lead to denial of service. There is data plane exposure for virtual servers when the HTTP2 profile is enabled. There is no control plane exposure to this issue.

Weakness: CWE-20

Which versions are affected by CVE-2018-5514?

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-2018-5514?

No fix has been published for CVE-2018-5514 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-5514 being exploited?

There is no known exploitation of CVE-2018-5514 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-mfwm-cpg4-4mww.