Nonce Reuse Vulnerability in Rockwell Automation Programmable Logic Controllers
CVE-2017-7902

9.8CRITICAL

Key Information:

Vendor

Rockwellautomation

Status
Rockwell Automation Allen-bradley Micrologix 1100 And 1400
Vendor
CVE Published:
30 June 2017

What is CVE-2017-7902?

A vulnerability exists in Rockwell Automation's Allen-Bradley MicroLogix 1100 and 1400 Programmable Logic Controllers due to the reuse of nonces during encryption processes. This flaw can enable attackers to capture and replay valid requests, leading to unauthorized actions until the nonce is refreshed. Devices affected include several models from both series, specifically those running Version 16.00 or earlier. Users of these devices should review the security implications of this vulnerability and take protective measures.

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Affected Version(s)

Rockwell Automation Allen-Bradley MicroLogix 1100 and 1400 Rockwell Automation Allen-Bradley MicroLogix 1100 and 1400

References

http://www.securitytracker.com/id/1038546
vdb-entryx_refsource_SECTRACK
https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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