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

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CVE-2021-34594

Severity CVSS v4.0:
Pending analysis
Type:
CWE-22 Path Traversal
Publication date:
04/11/2021
Last modified:
06/11/2021

Description

TwinCAT OPC UA Server in TF6100 and TS6100 in product versions before 4.3.48.0 or with TcOpcUaServer versions below 3.2.0.194 are prone to a relative path traversal that allow administrators to create or delete any files on the system.

Impact

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

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

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

Base Score 3.x
6.50
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:L/Au:S/C:N/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 8.50 HIGH
Vector: AV:N/AC:L/Au:S/C:N/I:C/A:C

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

Base Score 2.0
8.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:beckhoff:tf6100_firmware:*:*:*:*:*:*:*:* 4.3.48.0 (excluding)
cpe:2.3:h:beckhoff:tf6100:-:*:*:*:*:*:*:*
cpe:2.3:o:beckhoff:ts6100_firmware:*:*:*:*:*:*:*:* 4.3.48.0 (excluding)
cpe:2.3:h:beckhoff:ts6100:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools