#VU54868 Improper Certificate Validation in Siemens products - CVE-2021-31892

Vulnerability identifier: #VU54868

Vulnerability risk: Medium

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

CVE-ID: CVE-2021-31892

CWE-ID: CWE-295

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
SINUMERIK Analyze MyConditionSINUMERIK Analyze MyPerformance
SINUMERIK Analyze MyPerformance / OEE-Monitor
SINUMERIK Analyze MyPerformance / OEE-Tuning
SINUMERIK Integrate for Production
SINUMERIK Manage MyMachines
SINUMERIK Manage MyMachines / Remote
SINUMERIK Manage MyMachines / Spindel Monitor
SINUMERIK Manage MyPrograms
SINUMERIK Manage MyResources / Programs
SINUMERIK Manage MyResources / Tools
SINUMERIK Manage My Tools
SINUMERIK Optimize MyProgramming / NX-Cam Editor
SINUMERIK Integrate Client 02
SINUMERIK Integrate Client 03
SINUMERIK Integrate Client 04
SINUMERIK Operate

Software vendor:
Siemens

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to an error in a third-party dependency, the SSL flags used for setting up a TLS connection to a server are overwritten with wrong settings. A remote attacker can perform a man-in-the-middle (MitM) attack.

Install updates from vendor's website.

• https://cert-portal.siemens.com/productcert/pdf/ssa-729965.pdf