File and Directory Information Exposure in Siemens SIMATIC WinCC and SIMATIC PCS 7



Published: 2022-02-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-40363
CWE-ID CWE-538
Exploitation vector Local
Public exploit N/A
Vulnerable software
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SIMATIC PCS 7
Server applications / SCADA systems

Siemens SIMATIC WinCC
Server applications / SCADA systems

Vendor Siemens

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) File and Directory Information Exposure

EUVDB-ID: #VU60533

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-40363

CWE-ID: CWE-538 - File And Directory Information Exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to the affected component stores the credentials of a local system account in a potentially publicly accessible project file using an outdated cipher algorithm. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SIMATIC PCS 7: 8.0 - 9.1

Siemens SIMATIC WinCC: 7.0 - 17 Update 2


CPE2.3 External links

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

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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