F5 Networks BIG-IP : vCMP vulnerability (K03165684)

Low Nessus Plugin ID 118619

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

Malicious root users with access to a vCMP guest can disrupt 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. (CVE-2018-5518)

Impact

This vulnerability allows an authenticated root user on a vCMP guest to disrupt service on adjacent vCMP guests running on the same host.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K03165684.

See Also

https://support.f5.com/csp/#/article/K03165684

Plugin Details

Severity: Low

ID: 118619

File Name: f5_bigip_SOL03165684.nasl

Version: 1.1

Type: local

Published: 2018/11/02

Modified: 2018/11/02

Dependencies: 76940

Risk Information

Risk Factor: Low

CVSS v2.0

Base Score: 2.3

Vector: CVSS2#AV:A/AC:M/Au:S/C:N/I:N/A:P

CVSS v3.0

Base Score: 5.4

Vector: CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H

Vulnerability Information

CPE: cpe:/a:f5:big-ip_access_policy_manager, cpe:/a:f5:big-ip_advanced_firewall_manager, cpe:/a:f5:big-ip_application_acceleration_manager, cpe:/a:f5:big-ip_application_security_manager, cpe:/a:f5:big-ip_application_visibility_and_reporting, cpe:/a:f5:big-ip_global_traffic_manager, cpe:/a:f5:big-ip_link_controller, cpe:/a:f5:big-ip_local_traffic_manager, cpe:/a:f5:big-ip_policy_enforcement_manager, cpe:/a:f5:big-ip_webaccelerator, cpe:/h:f5:big-ip

Required KB Items: Host/local_checks_enabled, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version

Patch Publication Date: 2018/05/01

Reference Information

CVE: CVE-2018-5518