File Path Injection Vulnerability in Siemens OpenPCS and SIMATIC Products
CVE-2021-40359

7.7HIGH

Key Information:

Vendor

Siemens
Status
Openpcs 7 V8.2
Openpcs 7 V9.0
Openpcs 7 V9.1
Simatic Batch V8.2
Vendor
CVE Published:
9 November 2021

What is CVE-2021-40359?

A vulnerability exists in multiple Siemens products where the systems fail to adequately neutralize certain characters within the pathname during file downloads. This failure allows attackers to craft paths that bypass restrictions, enabling them to access sensitive files outside of the intended directory. This issue affects various versions of OpenPCS, SIMATIC BATCH, SIMATIC NET PC Software, SIMATIC PCS, and SIMATIC WinCC, creating a significant security risk for users of these systems.

Affected Version(s)

OpenPCS 7 V8.2 All versions

OpenPCS 7 V9.0 All versions < V9.0 Upd4

OpenPCS 7 V9.1 All versions

References

https://cert-portal.siemens.com/productcert/pdf/ssa-84018...

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.