CVE-2020-6990CWE-321

Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500…

Critical · published March 16, 2020

CVSS v3.1
9.8
EPSS
4%
Percentile
91.2
In the wild
Unconfirmed
What it is

🚨 Hard-coded cryptographic keys in Rockwell Automation MicroLogix controllers could be a game-changer for attackers! 🔥 Think of a treasure chest with the key to unlock it printed right on the outside — a major security flaw! This hard-coded key makes accessing your system as easy as simply reading a label. An attacker could exploit this vulnerability to gain unauthorized access to your controllers, potentially manipulating processes or stealing sensitive data. This could lead to catastrophic downtime or even physical harm in critical industrial environments. The stakes couldn’t be higher!

Put simply

Think of a treasure chest with the key to unlock it printed right on the outside — a major security flaw! This hard-coded key makes accessing your system as easy as simply reading a label. This vulnerability results from a hard-coded cryptographic key embedded in the RSLogix 500 binary file. This flaw allows an attacker to extract the key and perform further cryptographic attacks, jeopardizing the integrity of the system.

What to do

An attacker could exploit this vulnerability to gain unauthorized access to your controllers, potentially manipulating processes or stealing sensitive data. This could lead to catastrophic downtime or even physical harm in critical industrial environments. The stakes couldn’t be higher! Update to RSLogix 500 version 12.002 or later to eliminate this vulnerability. Additionally, review your system architecture for other hard-coded secrets and implement stronger encryption practices. Conduct a thorough audit of your controllers. This is fixable! Follow these steps and you'll bolster your security in no time. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.04367 · 91.2th percentile
Weakness
CWE-321 · Use of Hard-coded Cryptographic Key
Published
2020-03-16T15:39Z
EPSS history
Timeline
  • 16 MAR 15:39Z
    Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500…
    cvelistv5