Improper Certificate Validation in Siemens SINUMERIK Integrate Operate Client

1) Improper Certificate Validation

EUVDB-ID: #VU54868

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

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 MyCondition SINUMERIK 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

External links

http://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.