CVE-2018-5518
What it is
On F5 BIG-IP 13.0.0-13.1.0.5 or 12.0.0-12.1.3.3, malicious root users with access to a VCMP guest can cause a disruption of service on adjacent VCMP guests running on the same host. Exploiting this vulnerability causes the vCMPd process on the adjacent VCMP guest to restart and produce a core file. This issue is only exploitable on a VCMP guest which is operating in "host-only" or "bridged" mode. VCMP guests which are "isolated" are not impacted by this issue and do not provide mechanism to exploit the vulnerability. Guests which are deployed in "Appliance Mode" may be impacted however the exploit is not possible from an Appliance Mode guest. To exploit this vulnerability root access on a guest system deployed as "host-only" or "bridged" mode is required.
At a glance
- Exploitability
- Can be exploited from the same network segment with an admin-level account. High risk of service disruption.
- Exploit odds
- 0.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.4% in the next 30 days (EPSS).
- Severity: 5.4 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.4% · EPSS, next 30 days
- Record status
- Modified
Affected
- f5 big-ip Local Traffic Manager ≤ 12.1.3
- f5 big-ip Local Traffic Manager ≤ 13.1.0
- f5 big-ip Application Acceleration Manager ≤ 12.1.3
- f5 big-ip Application Acceleration Manager ≤ 13.1.0
- f5 big-ip Advanced Firewall Manager ≤ 12.1.3
- f5 big-ip Advanced Firewall Manager ≤ 13.1.0
- f5 big-ip Analytics ≤ 12.1.3
- f5 big-ip Analytics ≤ 13.1.0
Attack profile CVSS 3.0 · 5.4
- Attack vector
- Adjacent network
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2018-5518.md and follow it. Check whether this project is affected by CVE-2018-5518. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
