Multiple vulnerabilities in Siemens SIMATIC CN 4100



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-29130
CVE-2023-29131
CWE-ID CWE-284
CWE-276
Exploitation vector Network
Public exploit N/A
Vulnerable software
SIMATIC CN 4100
Hardware solutions / Firmware

Vendor Siemens

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control

EUVDB-ID: #VU78229

Risk: Medium

CVSSv4.0: [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-29130

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the configuration files. A remote user can bypass implemented security restrictions, gain elevated privileges and control the target device.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SIMATIC CN 4100: before 2.5

CPE2.3 External links

http://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Incorrect default permissions

EUVDB-ID: #VU78230

Risk: Medium

CVSSv4.0: [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-29131

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions in the SSH configuration. A remote user can bypass network isolation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SIMATIC CN 4100: before 2.5

CPE2.3 External links

http://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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