CVE-2021-40363 Information

Description

A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions) SIMATIC PCS 7 V9.0 (All versions) SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1) SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7) SIMATIC WinCC V16 (All versions < V16 Update 5) SIMATIC WinCC V17 (All versions < V17 Update 2) SIMATIC WinCC V17 (All versions >= V17 Update 2) SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19) SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 6). The affected component stores the credentials of a local system account in a potentially publicly accessible project file using an outdated cipher algorithm. An attacker may use this to brute force the credentials and take over the system.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-914168.pdf

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8