Authorization bypass through user-controlled key in SIMATIC CN 4100 - CVE-2023-49251
Published: January 10, 2024
Vulnerability identifier: #VU85248
CSH Severity: Medium
CVSS v4.0: 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
Vendor: Siemens
Affected software:
SIMATIC CN 4100
SIMATIC CN 4100
Detailed vulnerability 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.
How to mitigate CVE-2023-49251
Install updates from vendor's website.