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F5 Networks BIG-IP : Appliance mode vulnerability (K46524395)

medium Nessus Plugin ID 124422

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Synopsis

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

Description

On BIG-IP 14.0.0-14.1.0.1, 13.0.0-13.1.1.4, and 12.1.0-12.1.4, internal methods used to prevent arbitrary file overwrites in Appliance Mode were not fully effective. An authenticated attacker with a high privilege level may be able to bypass protections implemented in appliance mode to overwrite arbitrary system files.
(CVE-2019-6614)

Note : Appliance mode is designed to meet the needs of customers in especially sensitive sectors by limiting the BIG-IP system administrative access to match that of a typical network appliance and not a multi-user UNIX device. When a BIG-IP system is configured in Appliance mode, the Advanced Shell ( bash ) access to the file system is restricted. For information about Appliance mode, refer to K12815:
Overview of Appliance mode.

Impact

BIG-IP

This vulnerability may allow unauthorized write privileges to system files on systems configured in Appliance mode.

BIG-IQ, F5 iWorkflow, Enterprise Manager, 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 K46524395.

See Also

https://my.f5.com/manage/s/article/K46524395

Plugin Details

Severity: Medium

ID: 124422

File Name: f5_bigip_SOL46524395.nasl

Version: 1.7

Type: local

Published: 5/1/2019

Updated: 11/2/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2019-6614

CVSS v3

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 4.3

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/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, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version

Exploit Ease: No known exploits are available

Patch Publication Date: 4/30/2019

Vulnerability Publication Date: 5/3/2019

Reference Information

CVE: CVE-2019-6614