medium
5.4
Advisory Published
Updated

CVE-2018-5518

First published: Wed May 02 2018(Updated: )

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.

Credit: f5sirt@f5.com

Affected SoftwareAffected VersionHow to fix
F5 Big-ip Local Traffic Manager>=12.0.0<=12.1.3
F5 Big-ip Local Traffic Manager>=13.0.0<=13.1.0
F5 Big-ip Application Acceleration Manager>=12.0.0<=12.1.3
F5 Big-ip Application Acceleration Manager>=13.0.0<=13.1.0
F5 BIG-IP Advanced Firewall Manager>=12.0.0<=12.1.3
F5 BIG-IP Advanced Firewall Manager>=13.0.0<=13.1.0
F5 BIG-IP Analytics>=12.0.0<=12.1.3
F5 BIG-IP Analytics>=13.0.0<=13.1.0
F5 BIG-IP Access Policy Manager>=12.0.0<=12.1.3
F5 BIG-IP Access Policy Manager>=13.0.0<=13.1.0
F5 BIG-IP Application Security Manager>=12.0.0<=12.1.3
F5 BIG-IP Application Security Manager>=13.0.0<=13.1.0
F5 Big-ip Edge Gateway>=12.0.0<=12.1.3
F5 Big-ip Edge Gateway>=13.0.0<=13.1.0
F5 Big-ip Global Traffic Manager>=12.0.0<=12.1.3
F5 Big-ip Global Traffic Manager>=13.0.0<=13.1.0
F5 Big-ip Link Controller>=12.0.0<=12.1.3
F5 Big-ip Link Controller>=13.0.0<=13.1.0
F5 Big-ip Policy Enforcement Manager>=12.0.0<=12.1.3
F5 Big-ip Policy Enforcement Manager>=13.0.0<=13.1.0
F5 Big-ip Webaccelerator>=12.0.0<=12.1.3
F5 Big-ip Webaccelerator>=13.0.0<=13.1.0
F5 Big-ip Websafe>=12.0.0<=12.1.3
F5 Big-ip Websafe>=13.0.0<=13.1.0
F5 Big-ip Domain Name System>=12.0.0<=12.1.3
F5 Big-ip Domain Name System>=13.0.0<=13.1.0

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this F5 BIG-IP vulnerability?

    The vulnerability ID for this F5 BIG-IP vulnerability is CVE-2018-5518.

  • What is the severity of CVE-2018-5518?

    The severity of CVE-2018-5518 is medium with a CVSS score of 5.4.

  • Which versions of F5 BIG-IP are affected by CVE-2018-5518?

    F5 BIG-IP versions 12.0.0 through 12.1.3.3 and 13.0.0 through 13.1.0.5 are affected by CVE-2018-5518.

  • What is the impact of CVE-2018-5518?

    Exploiting CVE-2018-5518 can cause a disruption of service on adjacent VCMP guests running on the same host.

  • How can I fix CVE-2018-5518?

    There is currently no known fix for CVE-2018-5518. It is recommended to apply the necessary patches or updates provided by the vendor when they become available.

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