AutomationDirect DirectLOGIC with Ethernet Communication Uncontrolled Resource Consumption

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• automationdirect d0-06aa firmwarebefore 2.72
• automationdirect d0-06ar firmwarebefore 2.72
• automationdirect d0-06da firmwarebefore 2.72
• automationdirect d0-06dd1 firmwarebefore 2.72
• automationdirect d0-06dd1-d firmwarebefore 2.72
• automationdirect d0-06dd2 firmwarebefore 2.72
• automationdirect d0-06dd2-d firmwarebefore 2.72
• automationdirect d0-06dr firmwarebefore 2.72
• automationdirect d0-06dr-d firmwarebefore 2.72

Versions reported by the vendor

Affected version ranges reported by the assigning authority (icscert). Independent of NVD's CPE analysis and usually ahead of it.

• AutomationDirect DirectLOGIC D0-06 series CPUs

  • D0-06DD1 and later · before 2.72affected
  • D0-06DD2 and later · before 2.72affected
  • D0-06DR and later · before 2.72affected
  • D0-06DA and later · before 2.72affected
  • D0-06AR and later · before 2.72affected
  • D0-06AA and later · before 2.72affected
  • D0-06DD1-D and later · before 2.72affected
  • D0-06DD2-D and later · before 2.72affected
  • D0-06DR-D and later · before 2.72affected

Other highest-scoring records for the same primary product.

• CVE-2022-2003AutomationDirect DirectLOGIC with Serial Communication Cleartext Transmission
  36Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1function expand(node) {2  return node.children.map(expand);3}

1const MAX_DEPTH = 32;2function expand(node, depth = 0) {3  if (depth > MAX_DEPTH) throw new Error("too deep");4  return node.children.map((c) => expand(c, depth + 1));5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.