CVE-2022-31207
Omron SYSMAC Cx PLCs FINS Authentication Bypass
Description
The Omron SYSMAC Cx product family PLCs (CS series, CJ series, and CP series) through 2022-05-18 lack cryptographic authentication. They utilize the Omron FINS (9600/TCP) protocol for engineering purposes, including downloading projects and control logic to the PLC. This protocol has authentication flaws as reported in FSCT-2022-0057. Control logic is downloaded to PLC volatile memory using the FINS Program Area Read and Program Area Write commands or to non-volatile memory using other commands from where it can be loaded into volatile memory for execution. The logic that is loaded into and executed from the user program area exists in compiled object code form. Upon execution, these object codes are first passed to a dedicated ASIC that determines whether the object code is to be executed by the ASIC or the microprocessor. In the former case, the object code is interpreted by the ASIC whereas in the latter case the object code is passed to the microprocessor for object code interpretation by a ROM interpreter. In the abnormal case where the object code cannot be handled by either, an abnormal condition is triggered and the PLC is halted. The logic that is downloaded to the PLC does not seem to be cryptographically authenticated, thus allowing an attacker to manipulate transmitted object code to the PLC and either execute arbitrary object code commands on the ASIC or on the microprocessor interpreter.
INFO
Published Date :
July 26, 2022, 10:15 p.m.
Last Modified :
Aug. 4, 2022, 3:01 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2022-31207
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.
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-2022-31207
.
URL | Resource |
---|---|
https://www.cisa.gov/uscert/ics/advisories/icsa-22-179-02 | Third Party Advisory US Government Resource |
https://www.forescout.com/blog/ | 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-2022-31207
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-31207
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. 04, 2022
Action Type Old Value New Value 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://www.cisa.gov/uscert/ics/advisories/icsa-22-179-02 No Types Assigned https://www.cisa.gov/uscert/ics/advisories/icsa-22-179-02 Third Party Advisory, US Government Resource Changed Reference Type https://www.forescout.com/blog/ No Types Assigned https://www.forescout.com/blog/ Third Party Advisory Added CWE NIST CWE-347 Added CPE Configuration AND OR *cpe:2.3:o:omron:sysmac_cs1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 4.1 OR cpe:2.3:h:omron:sysmac_cs1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:omron:sysmac_cj2m_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.1 OR cpe:2.3:h:omron:sysmac_cj2m:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:omron:sysmac_cj2h_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.5 OR cpe:2.3:h:omron:sysmac_cj2h:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:omron:sysmac_cp1e_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.30 OR cpe:2.3:h:omron:sysmac_cp1e:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:omron:sysmac_cp1h_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.30 OR cpe:2.3:h:omron:sysmac_cp1h:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:omron:sysmac_cp1l_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.10 OR cpe:2.3:h:omron:sysmac_cp1l:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:omron:cp1w-cif41_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:omron:cp1w-cif41:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-31207
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-2022-31207
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.22 }} -0.03%
score
0.59124
percentile