CVE-2017-6028

Severity CVSS v4.0:

Pending analysis

Type:

CWE-522 Insufficiently Protected Credentials

Publication date:

30/06/2017

Last modified:

20/04/2025

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vector 2.0

AV:N/AC:L/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0

5.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:schneider-electric:modicon_m241_firmware::::::::		4.0.3.20 (including)
cpe:2.3:h:schneider-electric:modicon_m241:-:::::::*
cpe:2.3:o:schneider-electric:modicon_m251_firmware::::::::		4.0.3.20 (including)
cpe:2.3:h:schneider-electric:modicon_m251:-:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2017-6028

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools