Detections
Analytics

Schneider Electric Modicon M221 < 1.6.2.0 Password Overwrite

critical Nessus Network Monitor Plugin ID 720153

Synopsis

A Permissions, Privileges, and Access Control vulnerability exists in Schneider Electric's Modicon M221 product.

Description

A Permissions, Privileges, and Access Control vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0). The vulnerability allows unauthorized users to overwrite the original password with their password. If an attacker exploits this vulnerability and overwrite the password, the attacker can upload the original program from the PLC.

Solution

Perform vendor recommended mitigations and apply available vendor upgrades.

See Also

http://www.securityfocus.com/bid/105182,https://ics-cert.us-cert.gov/advisories/ICSA-18-240-01,https://www.schneider-electric.com/en/download/document/SEVD-2018-235-01/

Plugin Details

Severity: Critical

ID: 720153

Family: SCADA

Published: 5/8/2019

Updated: 9/30/2019

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 8/28/2018

Vulnerability Publication Date: 8/28/2018

Reference Information

CVE: CVE-2018-7791

BID: 105182