7.4
HIGH
CVE-2021-31892
Siemens SINUMERIK TLS MITM Vancecurity
Description

A vulnerability has been identified in SINUMERIK Analyse MyCondition (All versions), SINUMERIK Analyze MyPerformance (All versions), SINUMERIK Analyze MyPerformance /OEE-Monitor (All versions), SINUMERIK Analyze MyPerformance /OEE-Tuning (All versions), SINUMERIK Integrate Client 02 (All versions >= V02.00.12 < 02.00.18), SINUMERIK Integrate Client 03 (All versions >= V03.00.12 < 03.00.18), SINUMERIK Integrate Client 04 (V04.00.02 and all versions >= V04.00.15 < 04.00.18), SINUMERIK Integrate for Production 4.1 (All versions < V4.1 SP10 HF3), SINUMERIK Integrate for Production 5.1 (V5.1), 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 MyTools (All versions), SINUMERIK Operate V4.8 (All versions < V4.8 SP8), SINUMERIK Operate V4.93 (All versions < V4.93 HF7), SINUMERIK Operate V4.94 (All versions < V4.94 HF5), SINUMERIK Optimize MyProgramming /NX-Cam Editor (All versions). Due to an error in a third-party dependency the ssl flags used for setting up a TLS connection to a server are overwitten with wrong settings. This results in a missing validation of the server certificate and thus in a possible TLS MITM szenario.

INFO

Published Date :

July 13, 2021, 11:15 a.m.

Last Modified :

Aug. 9, 2021, 4:26 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.2

Exploitability Score :

2.2
Affected Products

The following products are affected by CVE-2021-31892 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Siemens sinumerik_analyse_mycondition_firmware
2 Siemens sinumerik_analyze_myperformance_firmware
3 Siemens sinumerik_integrate_client_firmware
4 Siemens sinumerik_integrate_for_production_firmware
5 Siemens sinumerik_manage_mymachines_firmware
6 Siemens sinumerik_manage_myprograms_firmware
7 Siemens sinumerik_manage_myresources_firmware
8 Siemens sinumerik_manage_mytools_firmware
9 Siemens sinumerik_operate_firmware
10 Siemens sinumerik_optimize_myprogramming_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-31892.

URL Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-729965.pdf Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-194-04 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-31892 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-31892 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Aug. 09, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
    Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-729965.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-729965.pdf Vendor Advisory
    Changed Reference Type https://us-cert.cisa.gov/ics/advisories/icsa-21-194-04 No Types Assigned https://us-cert.cisa.gov/ics/advisories/icsa-21-194-04 Third Party Advisory
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_analyse_mycondition_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:sinumerik_analyse_mycondition:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_analyze_myperformance_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:sinumerik_analyze_myperformance:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_integrate_client_firmware:*:*:*:*:*:*:*:* versions from (including) 2.00.12 up to (excluding) 2.00.18 *cpe:2.3:o:siemens:sinumerik_integrate_client_firmware:*:*:*:*:*:*:*:* versions from (including) 3.00.12 up to (excluding) 3.00.18 *cpe:2.3:o:siemens:sinumerik_integrate_client_firmware:*:*:*:*:*:*:*:* versions from (including) 4.00.15 up to (excluding) 4.00.18 OR cpe:2.3:h:siemens:sinumerik_integrate_client:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_integrate_for_production_firmware:*:*:*:*:*:*:*:* versions up to (including) 4.1 *cpe:2.3:o:siemens:sinumerik_integrate_for_production_firmware:5.1:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:sinumerik_integrate_for_production:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_manage_mymachines_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:sinumerik_manage_mymachines:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_manage_myprograms_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:sinumerik_manage_myprograms:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_manage_myresources_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:sinumerik_manage_myresources:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_manage_mytools_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:sinumerik_manage_mytools:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_operate_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 4.8 *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.8:-:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.8:sp1:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.8:sp2:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.8:sp3:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.8:sp4:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.8:sp5:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.8:sp6:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.8:sp7:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.93:-:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.93:hotfix_1:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.93:hotfix_2:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.93:hotfix_3:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.93:hotfix_4:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.93:hotfix_5:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.93:hotfix_6:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.94:-:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.94:hotfix_1:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.94:hotfix_2:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.94:hotfix_3:*:*:*:*:*:* *cpe:2.3:o:siemens:sinumerik_operate_firmware:4.94:hotfix_4:*:*:*:*:*:* OR cpe:2.3:h:siemens:sinumerik_operate:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_optimize_myprogramming_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:sinumerik_optimize_myprogramming:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jul. 30, 2021

    Action Type Old Value New Value
    Added Reference https://us-cert.cisa.gov/ics/advisories/icsa-21-194-04 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-31892 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-31892 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.08 }} -0.00%

score

0.31737

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability