CVE-2020-6998

Summary

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 Software

VendorProductVersion RangeStatus
Rockwell AutomationArmor Compact GuardLogix 5370 controllersunspecified <= versions 33 and prioraffected
Rockwell AutomationArmor GuardLogix Safety Controllersunspecified <= versions 33 and prioraffected
Rockwell AutomationCompactLogix 5370 L1 controllersunspecified <= versions 33 and prioraffected
Rockwell AutomationCompactLogix 5370 L2 controllersunspecified <= versions 33 and prioraffected
Rockwell AutomationCompactLogix 5370 L3 controllersunspecified <= versions 33 and prioraffected
Rockwell AutomationCompact GuardLogix 5370 controllersunspecified <= versions 33 and prioraffected
Rockwell AutomationControlLogix 5570 controllersunspecified <= versions 33 and prioraffected

Weaknesses

  • CVE-22 Improper Input Validation

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References