CVE-2016-7475 Denial of service in BIG-IP

High 7.5 Published Updated

Attackers can cause a denial of service on F5 BIG-IP devices by exploiting improper connection cleanup in SPDY or HTTP/2 profiles.

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-2016-7475?

CVE-2016-7475 is a high-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 8 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Under some circumstances on BIG-IP 12.0.0-12.1.0, 11.6.0-11.6.1, or 11.4.0-11.5.4 HF1, the Traffic Management Microkernel (TMM) may not properly clean-up pool member network connections when using SPDY or HTTP/2 virtual server profiles.

Weakness: CWE-20

Which versions are affected by CVE-2016-7475?

It affects 8 products.

Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager, F5 Big-Ip Link Controller, F5 Big-Ip Local Traffic Manager and 2 more.

How do I fix CVE-2016-7475?

No fix has been published for CVE-2016-7475 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-2016-7475 being exploited?

There is no known exploitation of CVE-2016-7475 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-xwp4-prq2-v9q4.

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