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Vulnerability · Published Jul 27, 2022 · Assigned by icscert

CVE-2020-6998Rockwell Automation CompactLogix 5370 and ControlLogix 5570 Controllers Improper Input Validation

Medium 5.8

In plain English

A medium-severity improper input validation in Armor Compact GuardLogix 5370 controllers from Rockwell Automation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.2% (higher than 88% of all known vulnerabilities).

Severity (CVSS 3.1)5.8Medium
Exploit odds (30 days)3.2%top 12.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

The connection establishment algorithm found in Rockwell Automation CompactLogix 5370 and ControlLogix 5570 versions 33 and prior does not sufficiently manage its control flow during execution, creating an infinite loop. This may allow an attacker to send specially crafted CIP packet requests to a controller, which may cause denial-of-service conditions in communications with other products.

Affected products (as reported)

VendorProductVersions
Rockwell Automation Armor Compact GuardLogix 5370 controllers unspecified – through versions 33 and prior
Rockwell Automation Armor GuardLogix Safety Controllers unspecified – through versions 33 and prior
Rockwell Automation CompactLogix 5370 L1 controllers unspecified – through versions 33 and prior
Rockwell Automation CompactLogix 5370 L2 controllers unspecified – through versions 33 and prior
Rockwell Automation CompactLogix 5370 L3 controllers unspecified – through versions 33 and prior
Rockwell Automation Compact GuardLogix 5370 controllers unspecified – through versions 33 and prior
Rockwell Automation ControlLogix 5570 controllers unspecified – through versions 33 and prior

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

References