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

Vulnerability identifier: #VU54868

CSH Severity: Medium

CVSS v4: 9.1 [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]

CVE-ID: CVE-2021-31892

CWE-ID: CWE-295

Exploitation vector: Remote access

Exploit availability: No public exploit available

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.

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

Install updates from vendor's website.

SINUMERIK Operate - addressed in versions 4.8 SP8, 4.93 HF7, 4.94 HF5
SINUMERIK Integrate Client 02 - update to 02.00.18
SINUMERIK Integrate Client 03 - update to 03.00.18
SINUMERIK Integrate Client 04 - update to 04.00.18

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

• Improper Certificate Validation in Siemens SINUMERIK Integrate Operate Client