Buffer Overflow Vulnerability in OpenPLC Controller by OpenPLC Project
CVE-2018-20818

9.8CRITICAL

Key Information:

Vendor

Openplcproject

Status
Openplc V2 Firmware
Vendor
CVE Published:
22 April 2019

What is CVE-2018-20818?

A buffer overflow vulnerability has been identified in the OpenPLC controller affecting versions OpenPLC_v2 and OpenPLC_v3. This flaw resides in the modbus.cpp file's mapUnusedIO() function. Exploiting this vulnerability may lead to unpredictable runtime crashes of the programmable logic controller (PLC) and could potentially result in other unknown impacts on system functionality.

References

https://arxiv.org/pdf/1809.07477
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

JSON
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CVE-2018-20818 : Buffer Overflow Vulnerability in OpenPLC Controller by OpenPLC Project