CVE-2021-37400
Siemens Simatic S7 Vulnerability - Authentication Bypass
Description
An attacker may obtain the user credentials from the communication between the PLC and the software. As a result, the PLC user program may be uploaded, altered, and/or downloaded.
INFO
Published Date :
Dec. 28, 2021, 1:15 p.m.
Last Modified :
Nov. 21, 2024, 6:15 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2021-37400
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.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
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-2021-37400.
| URL | Resource |
|---|---|
| https://jvn.jp/en/vu/JVNVU92279973/ | Third Party Advisory |
| https://us.idec.com/idec-us/en/USD/Programmable-Logic-Controller/Micro-PLC/FC6A-MicroSmart/c/MicroSmart_FC6A | Vendor Advisory |
| https://us.idec.com/idec-us/en/USD/Software-Downloads-Automation-Organizer | Vendor Advisory |
| https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf | Vendor Advisory |
| https://jvn.jp/en/vu/JVNVU92279973/ | Third Party Advisory |
| https://us.idec.com/idec-us/en/USD/Programmable-Logic-Controller/Micro-PLC/FC6A-MicroSmart/c/MicroSmart_FC6A | Vendor Advisory |
| https://us.idec.com/idec-us/en/USD/Software-Downloads-Automation-Organizer | Vendor Advisory |
| https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-37400 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-2021-37400
weaknesses.
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-2021-37400 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-37400 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://jvn.jp/en/vu/JVNVU92279973/ Added Reference https://us.idec.com/idec-us/en/USD/Programmable-Logic-Controller/Micro-PLC/FC6A-MicroSmart/c/MicroSmart_FC6A Added Reference https://us.idec.com/idec-us/en/USD/Software-Downloads-Automation-Organizer Added Reference https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jan. 07, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://jvn.jp/en/vu/JVNVU92279973/ No Types Assigned https://jvn.jp/en/vu/JVNVU92279973/ Third Party Advisory Changed Reference Type https://us.idec.com/idec-us/en/USD/Programmable-Logic-Controller/Micro-PLC/FC6A-MicroSmart/c/MicroSmart_FC6A No Types Assigned https://us.idec.com/idec-us/en/USD/Programmable-Logic-Controller/Micro-PLC/FC6A-MicroSmart/c/MicroSmart_FC6A Vendor Advisory Changed Reference Type https://us.idec.com/idec-us/en/USD/Software-Downloads-Automation-Organizer No Types Assigned https://us.idec.com/idec-us/en/USD/Software-Downloads-Automation-Organizer Vendor Advisory Changed Reference Type https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf No Types Assigned https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf Vendor Advisory Added CWE NIST CWE-522 Added CPE Configuration OR *cpe:2.3:a:idec:data_file_manager:*:*:*:*:*:*:*:* versions up to (including) 2.12.1 *cpe:2.3:a:idec:windedit:*:*:*:*:*:*:*:* versions up to (including) 1.3.1 *cpe:2.3:a:idec:windldr:*:*:*:*:*:*:*:* versions up to (including) 8.19.1 Added CPE Configuration AND OR *cpe:2.3:o:idec:microsmart_plus_fc6b_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.31 OR cpe:2.3:h:idec:microsmart_plus_fc6b:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:idec:microsmart_plus_fc6a_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.91 OR cpe:2.3:h:idec:microsmart_plus_fc6a:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:idec:microsmart_fc6b_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.31 OR cpe:2.3:h:idec:microsmart_fc6b:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:idec:microsmart_fc6a_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.32 OR cpe:2.3:h:idec:microsmart_fc6a:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:idec:ft1a_smartaxix_pro_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.31 OR cpe:2.3:h:idec:ft1a_smartaxix_pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:idec:ft1a_smartaxix_lite_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.31 OR cpe:2.3:h:idec:ft1a_smartaxix_lite:-:*:*:*:*:*:*:*
Vulnerability Scoring Details
Base CVSS Score: 9.8
Base CVSS Score: 7.5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.70 }} -0.66%
score
0.69770
percentile