CVE-2018-5540 Privilege escalation in BIG-IP (DNS, GTM)
The big3d process fails to minimize group privileges at startup, allowing local attackers to escalate privileges on F5 BIG-IP and related management systems.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-5540?
CVE-2018-5540 is a medium-severity vulnerability in F5 Big-Ip Domain Name System, published on 19 Jul 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
On F5 BIG-IP 13.0.0-13.0.1, 12.1.0-12.1.3.3, 11.6.0-11.6.3.1, or 11.5.1-11.5.6, Enterprise Manager 3.1.1, BIG-IQ Centralized Management 5.0.0-5.1.0, BIG-IQ Cloud and Orchestration 1.0.0, or F5 iWorkflow 2.1.0-2.3.0 the big3d process does not irrevocably minimize group privileges at start up.
Weakness: CWE-732
Which versions are affected by CVE-2018-5540?
It affects 6 products.
Products include F5 Big-Ip Domain Name System, F5 Big-Ip Global Traffic Manager, F5 Big-Iq Centralized Management, F5 Big-Iq Cloud and Orchestration, F5 Enterprise Manager, F5 F5 Iworkflow.
How do I fix CVE-2018-5540?
No fix has been published for CVE-2018-5540 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-5540 being exploited?
There is no known exploitation of CVE-2018-5540 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Ip Domain Name System
Sources
Also known as GHSA-6vp9-vc7c-884p.