CVE-2018-5518

Description

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.

5.4

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.11%

Vendor Advisory f5.com

Affected: F5 Networks, Inc. BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe)

References

Link	Tags
https://support.f5.com/csp/article/K03165684	vendor advisory
http://www.securitytracker.com/id/1040797	third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2018-5518?: CVE-2018-5518 has been scored as a medium severity vulnerability.
How to fix CVE-2018-5518?: To fix CVE-2018-5518, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-5518 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2018-5518 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-5518?: CVE-2018-5518 affects F5 Networks, Inc. BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe).

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