Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers Buffer Copy Without Checking Size of Input (CVE-2017-16740)

critical Tenable OT Security Plugin ID 500213

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A Buffer Overflow issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers, Series B and C Versions 21.002 and earlier. The stack-based buffer overflow vulnerability has been identified, which may allow remote code execution.

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Rockwell Automation encourages affected users to upgrade to the latest version of available firmware, FRN 21.003, which can be obtained from:

https://compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx?famID=30&crumb=112

Rockwell Automation also suggests that Modbus TCP can be disabled if it is not necessary in the implementation of the device to mitigate the vulnerability.

For more information, Rockwell Automation has released a security bulletin that can be accessed using valid credentials at:

https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1070883

Plugin Details

Severity: Critical

ID: 500213

Version: 1.8

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 4/11/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2017-16740

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:rockwellautomation:1766-l32bxba_firmware, cpe:/o:rockwellautomation:1766-l32awa_firmware, cpe:/o:rockwellautomation:1766-l32bxb_firmware, cpe:/o:rockwellautomation:1766-l32bwaa_firmware, cpe:/o:rockwellautomation:1766-l32awaa_firmware, cpe:/o:rockwellautomation:1766-l32bwa_firmware

Required KB Items: Tenable.ot/Rockwell

Exploit Ease: No known exploits are available

Patch Publication Date: 1/9/2018

Vulnerability Publication Date: 1/9/2018

Reference Information

CVE: CVE-2017-16740

CWE: 119

Detections

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