Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-34578

Severity CVSS v4.0:
Pending analysis
Type:
CWE-287 Authentication Issues
Publication date:
31/08/2021
Last modified:
08/09/2021

Description

This vulnerability allows an attacker who has access to the WBM to read and write settings-parameters of the device by sending specifically constructed requests without authentication on multiple WAGO PLCs in firmware versions up to FW07.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.10 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
8.10
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

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

Base Score 2.0
6.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:wago:750-890\/040-000_firmware:*:*:*:*:*:*:*:* fw07 (including)
cpe:2.3:h:wago:750-890\/040-000:-:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-890\/025-001_firmware:*:*:*:*:*:*:*:* fw07 (including)
cpe:2.3:h:wago:750-890\/025-001:-:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-890\/025-002_firmware:*:*:*:*:*:*:*:* fw07 (including)
cpe:2.3:h:wago:750-890\/025-002:-:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-890\/025-000_firmware:*:*:*:*:*:*:*:* fw07 (including)
cpe:2.3:h:wago:750-890\/025-000:-:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-832\/000-002_firmware:*:*:*:*:*:*:*:* fw07 (including)
cpe:2.3:h:wago:750-832\/000-002:-:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-362_firmware:*:*:*:*:*:*:*:* fw07 (including)
cpe:2.3:h:wago:750-362:-:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-823_firmware:*:*:*:*:*:*:*:* fw07 (including)
cpe:2.3:h:wago:750-823:-:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-832_firmware:*:*:*:*:*:*:*:* fw07 (including)

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


References to Advisories, Solutions, and Tools