CVE-2017-6156 Security feature bypass in BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe)

Medium 6.4 Published 13 Apr 2018 Updated 16 Sep 2024

Remote attackers with valid credentials can disrupt or impersonate IPSec tunnels when wildcard endpoints are configured.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2017-6156?

CVE-2017-6156 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, published on 13 Apr 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

When the F5 BIG-IP 12.1.0-12.1.1, 11.6.0-11.6.1, 11.5.1-11.5.5, or 11.2.1 system is configured with a wildcard IPSec tunnel endpoint, it may allow a remote attacker to disrupt or impersonate the tunnels that have completed phase 1 IPSec negotiations. The attacker must possess the necessary credentials to negotiate the phase 1 of the IPSec exchange to exploit this vulnerability; in many environment this limits the attack surface to other endpoints under the same administration.

Which versions are affected by CVE-2017-6156?

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-2017-6156?

No fix has been published for CVE-2017-6156 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-6156 being exploited?

There is no known exploitation of CVE-2017-6156 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-vcc3-5p5p-ggh7.