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F5 Networks BIG-IP : tmsh utility vulnerability (K28003839)

medium Nessus Plugin ID 118650

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Synopsis

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

Description

A BIG-IP user granted with tmsh access may cause the BIG-IP system to experience denial-of-service (DoS) when the BIG-IP user uses the tmsh utility to run the editcli preference commandand proceeds to savethe changes to another filename repeatedly. This actionutilizes storage space on the /var partition and when performed repeatedly causes the /var partition to befull. (CVE-2018-15322)

Impact

BIG-IP / BIG-IQ / Enterprise Manager / F5 iWorkflow

The BIG-IP system experiences a denial-of-service (DoS) attack until the storage space on the /var partition returns to normal. This vulnerability also applies to a BIG-IP system running in Appliance mode if it is configured to grant a BIG-IP user with TMOS Shell ( tmsh ) access.

Traffix SDC

There is no impact; this F5 product is not affected by this vulnerability.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K28003839.

See Also

https://my.f5.com/manage/s/article/K28003839

Plugin Details

Severity: Medium

ID: 118650

File Name: f5_bigip_SOL28003839.nasl

Version: 1.5

Type: local

Published: 11/2/2018

Updated: 11/2/2023

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2018-15322

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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_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_local_traffic_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: 10/30/2018

Vulnerability Publication Date: 10/31/2018

Reference Information

CVE: CVE-2018-15322