CVE-2018-7851: Buffer Overflow

Published May 22, 2019
·
Updated

CWE-119: Buffer errors vulnerability exists in Modicon M580 with firmware prior to V2.50, Modicon M340 with firmware prior to V3.01, BMxCRA312xx with firmware prior to V2.40, All firmware versions of Modicon Premium and 140CRA312xxx when sending a specially crafted Modbus packet, which could cause a denial of service to the device that would force a restart to restore availability.

Affected Software

82 affected components
Schneider-electric M580 Firmware<2.50
Schneider-electric Bmeh582040
Schneider-electric Bmeh582040c
Schneider-electric Bmeh584040
Schneider-electric Bmeh584040c
Schneider-electric Bmeh586040
Schneider-electric Bmeh586040c
Schneider-electric Modicon M580 Bmep581020
Schneider-electric Modicon M580 Bmep581020h
Schneider-electric Modicon M580 Bmep582020
Schneider-electric Modicon M580 Bmep582020h
Schneider-electric Modicon M580 Bmep582040
Schneider-electric Modicon M580 Bmep582040h
Schneider-electric Modicon M580 Bmep582040s
Schneider-electric Modicon M580 Bmep583020
Schneider-electric Modicon M580 Bmep583040
Schneider-electric Modicon M580 Bmep584020
Schneider-electric Modicon M580 Bmep584040
Schneider-electric Modicon M580 Bmep584040s
Schneider-electric Modicon M580 Bmep585040
Schneider-electric Modicon M580 Bmep585040c
Schneider-electric Modicon M580 Bmep586040
Schneider-electric Modicon M580 Bmep586040c
Schneider-electric M340 Firmware<3.01
Schneider-electric Bmxp341000
Schneider-electric Bmxp341000h
Schneider-electric Bmxp342000
Schneider-electric Bmxp3420102
Schneider-electric Bmxp3420102cl
Schneider-electric Bmxp342020
Schneider-electric Bmxp342020h
Schneider-electric Bmxp3420302
Schneider-electric Bmxp3420302cl
Schneider-electric Bmxp3420302h
Schneider-electric Bmx\/e Cra Firmware<2.40
Schneider-electric Bmxcra31200
Schneider-electric Bmxcra31210c
Schneider-electric Modicon Premium Firmware
Schneider-electric Modicon Premium
Schneider-electric 140cra312xxx Firmware
Schneider-electric 140cra312xxx
All of the following
Schneider-electric M580 Firmware<2.50
Any of the following
Schneider-electric Bmeh582040
Schneider-electric Bmeh582040c
Schneider-electric Bmeh584040
Schneider-electric Bmeh584040c
Schneider-electric Bmeh586040
Schneider-electric Bmeh586040c
Schneider-electric Modicon M580 Bmep581020
Schneider-electric Modicon M580 Bmep581020h
Schneider-electric Modicon M580 Bmep582020
Schneider-electric Modicon M580 Bmep582020h
Schneider-electric Modicon M580 Bmep582040
Schneider-electric Modicon M580 Bmep582040h
Schneider-electric Modicon M580 Bmep582040s
Schneider-electric Modicon M580 Bmep583020
Schneider-electric Modicon M580 Bmep583040
Schneider-electric Modicon M580 Bmep584020
Schneider-electric Modicon M580 Bmep584040
Schneider-electric Modicon M580 Bmep584040s
Schneider-electric Modicon M580 Bmep585040
Schneider-electric Modicon M580 Bmep585040c
Schneider-electric Modicon M580 Bmep586040
Schneider-electric Modicon M580 Bmep586040c
All of the following
Schneider-electric M340 Firmware<3.01
Any of the following
Schneider-electric Modicon M340 Bmxp341000
Schneider-electric Modicon M340 Bmxp341000h
Schneider-electric Modicon M340 Bmxp342000
Schneider-electric Modicon M340 Bmxp3420102
Schneider-electric Modicon M340 Bmxp3420102cl
Schneider-electric Modicon M340 Bmxp342020
Schneider-electric Modicon M340 Bmxp342020h
Schneider-electric Modicon M340 Bmxp3420302
Schneider-electric Modicon M340 Bmxp3420302cl
Schneider-electric Modicon M340 Bmxp3420302h
All of the following
Schneider-electric Bmx\/e Cra Firmware<2.40
Any of the following
Schneider-electric Bmxcra31200
Schneider-electric Bmxcra31210c
All of the following
Schneider-electric Modicon Premium Firmware
Schneider-electric Modicon Premium
All of the following
Schneider-electric 140cra312xxx Firmware
Schneider-electric 140cra312xxx

Event History

May 22, 2019
CVE Published
via MITRE·07:56 PM
Data Sourced
via MITRE·07:56 PM
DescriptionWeakness
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Frequently Asked Questions

1

What is the vulnerability ID for this vulnerability?

The vulnerability ID for this vulnerability is CVE-2018-7851.

2

What is the severity of CVE-2018-7851?

The severity of CVE-2018-7851 is medium with a CVSS score of 6.5.

3

Which software is affected by CVE-2018-7851?

CVE-2018-7851 affects Modicon M580 with firmware prior to V2.50, Modicon M340 with firmware prior to V3.01, BMxCRA312xx with firmware prior to V2.40, and all firmware versions of Modicon Premium and 140CRA312xxx.

4

How can I fix CVE-2018-7851?

To fix CVE-2018-7851, it is recommended to update the firmware of the affected devices to V2.50 or later for Modicon M580, V3.01 or later for Modicon M340, V2.40 or later for BMxCRA312xx, and the latest version available for Modicon Premium and 140CRA312xxx.

5

Where can I find more information about CVE-2018-7851?

You can find more information about CVE-2018-7851 in the Schneider Electric Security Advisory SEVD-2019-134-10.

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