Schneider Electric Modicon M241 and M251 PLCs Insufficiently Protected Credentials

critical Nessus Network Monitor Plugin ID 720115

Synopsis

An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs.

Description

An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs Modicon M241, all firmware versions, and Modicon M251, all firmware versions. Log-in credentials are sent over the network with Base64 encoding leaving them susceptible to sniffing. Sniffed credentials could then be used to log into the web application.

Solution

Perform vendor recommended mitigations and apply available vendor upgrades.

Plugin Details

Severity: Critical

ID: 720115

Family: SCADA

Published: 5/8/2019

Updated: 9/30/2019

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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: 3/30/2017

Vulnerability Publication Date: 3/30/2017

Reference Information

CVE: CVE-2017-6028

BID: 97254

Detections

Analytics