F5 Networks BIG-IP : iControl REST and tmsh vulnerability (K20541896)

high Nessus Plugin ID 126399

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Synopsis

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

Description

On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, 12.1.0-12.1.4.1, 11.6.1-11.6.3.4, and 11.5.2-11.5.8 and BIG-IQ 7.0.0-7.1.0.2, 6.0.0-6.1.0, and 5.1.0-5.4.0, an undisclosed iControl REST worker is vulnerable to command injection by an admin/resource admin user. This issue impacts both iControl REST and tmsh implementations. (CVE-2019-6621)

Impact

BIG-IP and BIG-IQ

This vulnerability may bypass appliance mode security by allowing the execution of arbitrary Advanced Shell ( bash ) commands. In non-Appliance mode deployments, the Administrator and Resource Administrator users already own this level of access. F5 considers this vulnerability a security concern primarily for systems deployed in Appliance mode, though a valid attack vector exists for non-appliance mode systems with users who are not already granted bash access, such as a Resource Administrator, who by default is not explicitly granted bash access.

Enterprise Manager, F5 iWorkflow, and Traffix SDC

There is no impact; these F5 products are not affected by this vulnerability.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K20541896.

Plugin Details

Severity: High

ID: 126399

File Name: f5_bigip_SOL20541896.nasl

Version: 1.8

Type: local

Family: F5 Networks Local Security Checks

Published: 7/2/2019

Updated: 11/3/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2019-6621

CVSS v3

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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_application_visibility_and_reporting, cpe:/a:f5:big-ip_domain_name_system, 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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/1/2019

Vulnerability Publication Date: 7/2/2019

Reference Information

CVE: CVE-2019-6621

Detections

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