F5 Networks BIG-IP : iRulesLX debug NodeJS vulnerability (K75532331)

critical Nessus Plugin ID 127500


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


Similar to the issue identified inCVE-2018-12120, the BIG-IP system will bind a debug nodejs process to all interfaces when invoked. This may expose the process to unauthorized users if the plugin is left in debug mode and the port is accessible.(CVE-2019-6644)


A remote attacker may be able to attach a remote computer to the debug port and evaluate arbitrary JavaScript.

BIG-IP systems in a standard, default configuration are not vulnerable. This vulnerability requires the BIG-IP systems to be provisioned foriRulesLXand have aworkspace that includes an extension configuration including the 'debug' flag, which must be manually added.


Upgrade to one of the non-vulnerable versions listed in the F5 Solution K75532331.

See Also



Plugin Details

Severity: Critical

ID: 127500

File Name: f5_bigip_SOL75532331.nasl

Version: 1.3

Type: local

Published: 8/12/2019

Updated: 1/6/2020

Configuration: Enable paranoid mode

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: Critical

Base Score: 9.4

Temporal Score: 8.2

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

Temporal Vector: 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_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, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 8/8/2019

Vulnerability Publication Date: 11/28/2018

Reference Information

CVE: CVE-2018-12120, CVE-2019-6644