CVE-2018-20818

Published: Apr 22, 2019Modified: Nov 21, 2024

9.8

Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

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.

Affected (2)

Products: Openplcproject: Openplc V2 Firmware, Openplc V3 Firmware

2 products

Openplc V2 Firmware

Openplc V3 Firmware

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Openplcproject Openplc V2 Firmware	All versions

Running on/with	Platform Versions
Openplcproject Openplc V2	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Openplcproject Openplc V3 Firmware	All versions

Running on/with	Platform Versions
Openplcproject Openplc V3	All versions

Related CWEs

Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (2)

https://arxiv.org/pdf/1809.07477

Source: cve@mitre.org

Third Party Advisory

https://arxiv.org/pdf/1809.07477

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

Timeline

No history available yet.