Improper Certificate Validation in Siemens SINUMERIK Integrate Operate Client

1) Improper Certificate Validation

EUVDB-ID: #VU54868

Risk: Medium

CVSSv4.0: 6.9 [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 - Improper Certificate Validation

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SINUMERIK Analyze MyConditionSINUMERIK Analyze MyPerformance: All versions

SINUMERIK Analyze MyPerformance / OEE-Monitor: All versions

SINUMERIK Analyze MyPerformance / OEE-Tuning: All versions

SINUMERIK Integrate for Production: All versions

SINUMERIK Manage MyMachines: All versions

SINUMERIK Manage MyMachines / Remote: All versions

SINUMERIK Manage MyMachines / Spindel Monitor: All versions

SINUMERIK Manage MyPrograms: All versions

SINUMERIK Manage MyResources / Programs: All versions

SINUMERIK Manage MyResources / Tools: All versions

SINUMERIK Manage My Tools: All versions

SINUMERIK Operate: 4.8 - 4.94

SINUMERIK Optimize MyProgramming / NX-Cam Editor: All versions

SINUMERIK Integrate Client 02: before 02.00.18

SINUMERIK Integrate Client 03: before 03.00.18

SINUMERIK Integrate Client 04: before 04.00.18

CPE2.3

• cpe:2.3:h:siemens:sinumerik_analyze_myconditionsinumerik_analyze_myperformance:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_analyze_myperformance_oee-monitor:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_analyze_myperformance_oee-tuning:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_integrate_for_production:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_manage_mymachines:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_manage_mymachines_remote:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_manage_mymachines_spindel_monitor:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_manage_myprograms:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_manage_myresources_programs:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_manage_myresources_tools:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_manage_my_tools:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:sinumerik_operate:4.8:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_optimize_myprogramming_nx-cam_editor:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_integrate_client_02:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_integrate_client_03:*:*:*:*:*:*:*:*
• cpe:2.3:h:siemens:sinumerik_integrate_client_04:*:*:*:*:*:*:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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