SB2018120723 - Denial of service in Rockwell Automation MicroLogix 1400 Controllers and 1756 ControlLogix

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Main Vulnerability Database SB2018120723

SB2018120723 - Denial of service in Rockwell Automation MicroLogix 1400 Controllers and 1756 ControlLogix

Published: December 7, 2018

Security Bulletin ID SB2018120723
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Missing authentication for critical function (CVE-ID: CVE-2018-17924)

CWE-ID: CWE-306 - Missing Authentication for Critical Function

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to a loss of communication between the device and the rest of the system when the affected device accepts this new IP configuration as the system traffic is still attempting to communicate with the device via the overwritten IP address.. A remote attacker can send a CIP connection request to an affected device, and upon successful connection, send a new IP configuration to the affected device even if the controller in the system is set to Hard RUN mode.


Remediation

Install update from vendor's website.

References