Authentication Bypass in Schneider Electric Modicon Modbus Protocol
CVE-2017-6034

9.8CRITICAL

Key Information:

Vendor

Schneider Electric
Status
Schneider Electric Modicon Modbus Protocol
Vendor
CVE Published:
30 June 2017

What is CVE-2017-6034?

The Schneider Electric Modicon Modbus Protocol is susceptible to an authentication bypass due to a capture-replay vulnerability. Sensitive information, including commands for operation such as run, stop, upload, and download, is transmitted in cleartext format. This flaw enables a potential attacker to gain unauthorized access and execute these commands without proper authentication, posing severe risks to system integrity and confidentiality.

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Affected Version(s)

Schneider Electric Modicon Modbus Protocol Schneider Electric Modicon Modbus Protocol

References

https://ics-cert.us-cert.gov/advisories/ICSA-17-101-01
x_refsource_MISC
http://www.securityfocus.com/bid/97562
vdb-entryx_refsource_BID

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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