Denial of Service Vulnerability in Allen-Bradley Flex IO by Rockwell Automation
CVE-2020-6087

7.5HIGH

Key Information:

Vendor

Rockwellautomation

Status
Allen Bradley
Vendor
CVE Published:
14 October 2020

What is CVE-2020-6087?

A denial of service vulnerability exists in the ENIP Request Path Data Segment functionality of the Allen-Bradley Flex IO 1794-AENT/B. An attacker can exploit this vulnerability by sending a specially crafted network request that introduces a malformed ANSI Extended Symbol Segment Sub-Type. When the device interprets this segment and the indicated data size exceeds the available packet data, it will enter a fault state, resulting in loss of communication with the device. This necessitates a physical power cycle to restore normal operations, thereby compromising the resilience and availability of the affected system.

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Affected Version(s)

Allen Bradley Allen-Bradley Flex IO 1794-AENT/B 4.003

References

https://talosintelligence.com/vulnerability_reports/TALOS...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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