CVE-2017-16718 Information

Description

Beckhoff TwinCAT 3 supports communication over ADS. ADS is a protocol for industrial automation in protected environments. This protocol uses user configured routes that can be edited remotely via ADS. This special command supports encrypted authentication with username/password. The encryption uses a fixed key that could be extracted by an attacker. Precondition of the exploitation of this weakness is network access at the moment a route is added.

CVSS Vector

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

Reference

https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2017-002.pdf

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.9