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CVE-2020-6998

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
27/07/2022
Last modified:
17/04/2025

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L CVSS v3.1 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): Low

Base Score 3.x
5.80
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:rockwellautomation:armor_compact_guardlogix_5370_firmware:*:*:*:*:*:*:*:* 33 (including)
cpe:2.3:h:rockwellautomation:armor_compact_guardlogix_5370:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:compact_guardlogix_5370_firmware:*:*:*:*:*:*:*:* 33 (including)
cpe:2.3:h:rockwellautomation:compact_guardlogix_5370:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:compactlogix_5370_l1_firmware:*:*:*:*:*:*:*:* 33 (including)
cpe:2.3:h:rockwellautomation:compactlogix_5370_l1:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:compactlogix_5370_l2_firmware:*:*:*:*:*:*:*:* 33 (including)
cpe:2.3:h:rockwellautomation:compactlogix_5370_l2:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:compactlogix_5370_l3_firmware:*:*:*:*:*:*:*:* 33 (including)
cpe:2.3:h:rockwellautomation:compactlogix_5370_l3:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:controllogix_5570_firmware:*:*:*:*:*:*:*:* 33 (including)
cpe:2.3:h:rockwellautomation:controllogix_5570:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:guardlogix_5560_firmware:*:*:*:*:*:*:*:* 33 (including)
cpe:2.3:h:rockwellautomation:guardlogix_5560:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:guardlogix_5570_firmware:*:*:*:*:*:*:*:* 33 (including)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools