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F5 Networks BIG-IP : TMOS Shell vulnerability (K21711352)

medium Nessus Plugin ID 136208

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Synopsis

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

Description

Authenticated users granted TMOS Shell ( tmsh ) privileges can access objects on the file system, which would normally be disallowed by tmsh restrictions. This allows for authenticated, low privileged attackers to access objects on the file system, which would not normally be allowed. (CVE-2019-19151)

Note : This vulnerability exists because of an incomplete fix for CVE-2018-5516.

Impact

This vulnerability allows unauthorized privileges to authenticated administrative users with TMOS Shell ( tmsh) access.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K21711352.

See Also

https://my.f5.com/manage/s/article/K21711352

Plugin Details

Severity: Medium

ID: 136208

File Name: f5_bigip_SOL21711352.nasl

Version: 1.9

Type: local

Published: 5/1/2020

Updated: 11/3/2023

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2019-19151

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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, Settings/ParanoidReport, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version

Exploit Ease: No known exploits are available

Patch Publication Date: 12/20/2019

Vulnerability Publication Date: 5/2/2018

Reference Information

CVE: CVE-2019-19151