CVE-2017-7898CWE-307

An Improper Restriction of Excessive Authentication Attempts issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic…

Critical · published June 30, 2017

CVSS v3.1
9.8
EPSS
5%
Percentile
92.3
In the wild
Unconfirmed
What it is

🚨 An attacker can repeatedly try passwords without any consequences! This flaw in Rockwell Automation's MicroLogix PLCs lets anyone play a guessing game until they get it right. 🔥 Think of it like a bank where you can try any PIN number without being locked out — the more you guess, the higher your chance of getting in! It’s a surprisingly sneaky oversight that leaves the door wide open for attackers. With this vulnerability, an attacker could easily gain unauthorized access to the MicroLogix PLCs by trying countless password combinations. If they succeed, they could manipulate the device, causing potentially dangerous situations in industrial settings or disrupting vital operations. This is absolutely devastating for anyone relying on these systems!

Put simply

Think of it like a bank where you can try any PIN number without being locked out — the more you guess, the higher your chance of getting in! It’s a surprisingly sneaky oversight that leaves the door wide open for attackers. This issue arises from improper restrictions on excessive authentication attempts in Rockwell Automation's MicroLogix 1100 and 1400 series controllers, allowing unlimited password guesses without any lockout penalties.

What to do

With this vulnerability, an attacker could easily gain unauthorized access to the MicroLogix PLCs by trying countless password combinations. If they succeed, they could manipulate the device, causing potentially dangerous situations in industrial settings or disrupting vital operations. This is absolutely devastating for anyone relying on these systems! Immediate action is required! Users should update their MicroLogix PLC firmware to the latest version beyond 16.00 to mitigate this risk. Additionally, implementing access controls and monitoring login attempts can help enhance security overall. You’ve got this! Follow these steps, and you’ll be on your way to securing your systems 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
0.05152 · 92.3th percentile
Weakness
CWE-307 · Improper Restriction of Excessive Authentication Attempts
Published
2017-06-30T02:35Z
EPSS history
Timeline
  • 30 JUN 02:35Z
    An Improper Restriction of Excessive Authentication Attempts issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic…
    cvelistv5