Authorization bypass through user-controlled key in SIMATIC CN 4100 - CVE-2023-49251

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Main Vulnerability Database Vulnerabilities #VU85248

Authorization bypass through user-controlled key in SIMATIC CN 4100 - CVE-2023-49251

Published: January 10, 2024


Vulnerability identifier: #VU85248
CSH Severity: 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-2023-49251
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
SIMATIC CN 4100
Software vendor:
Siemens

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to authentication bypass in the "intermediate installation" system. A remote user can login as root and take control of the device even after the affected device is fully set up.


Remediation

Install updates from vendor's website.

External links