F5 Networks BIG-IP : TMOS vulnerability (K49440608)

high Nessus Plugin ID 118671


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


When a specifically configured virtual server receives traffic of an undisclosed nature, the Traffic Management Microkernel (TMM) will crash and take the configured failover action, potentially causing a denial of service. The configuration that exposes this issue is not common and in general does not work when enabled in previous versions of BIG-IP. Starting in 12.1.0, BIG-IP will crash if the configuration that exposes this issue is enabled and the virtual server receives non-TCP traffic. With the fix of this issue, additional configuration validation logic has been added to prevent this configuration from being applied to a virtual server. (CVE-2018-5509)


This vulnerability allows for a remote disruption of service.


Upgrade to one of the non-vulnerable versions listed in the F5 Solution K49440608.

See Also


Plugin Details

Severity: High

ID: 118671

File Name: f5_bigip_SOL49440608.nasl

Version: 1.4

Type: local

Published: 11/2/2018

Updated: 11/2/2023

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2018-5509


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

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_link_controller, cpe:/a:f5:big-ip_local_traffic_manager, cpe:/a:f5:big-ip_policy_enforcement_manager, cpe:/h:f5:big-ip

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/21/2018

Vulnerability Publication Date: 3/22/2018

Reference Information

CVE: CVE-2018-5509