CVE-2018-20818

A buffer overflow vulnerability was discovered in the OpenPLC controller, in the OpenPLC_v2 and OpenPLC_v3 versions. It occurs in the modbus.cpp mapUnusedIO() function, which can cause a runtime crash of the PLC or possibly have unspecified other impact.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://arxiv.org/pdf/1809.07477	Third Party Advisory
https://arxiv.org/pdf/1809.07477	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:openplcproject:openplc_v2_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:openplcproject:openplc_v2:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:openplcproject:openplc_v3_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:openplcproject:openplc_v3:-:*:*:*:*:*:*:*

History

21 Nov 2024, 04:02

Type	Values Removed	Values Added
References	~~() https://arxiv.org/pdf/1809.07477 - Third Party Advisory~~	() https://arxiv.org/pdf/1809.07477 - Third Party Advisory

Information

Published : 2019-04-22 11:29

Updated : 2024-11-21 04:02

NVD link : CVE-2018-20818

Mitre link : CVE-2018-20818

CVE.ORG link : CVE-2018-20818

JSON object : View

Products Affected

openplcproject

openplc_v2_firmware
openplc_v2
openplc_v3
openplc_v3_firmware

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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