CVE-2021-20600
Mitsubishi Electric MELSEC iQ-R series C Controller Denial-of-Service vulnerability
Description
Uncontrolled resource consumption in Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery.
INFO
Published Date :
Oct. 8, 2021, 5:15 p.m.
Last Modified :
May 16, 2023, 10:50 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.2
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-2021-20600.
| URL | Resource |
|---|---|
| https://jvn.jp/vu/JVNVU94914666/index.html | Third Party Advisory |
| https://us-cert.cisa.gov/ics/advisories/icsa-21-280-04 | Third Party Advisory US Government Resource |
| https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-015_en.pdf | Vendor 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-2021-20600 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-20600 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 -
Modified Analysis by [email protected]
May. 16, 2023
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:C) Changed CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:r12ccpu-v_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:r12ccpu-v:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:mitsubishielectric:r12ccpu-v_firmware:*:*:*:*:*:*:*:* versions up to (including) 16 OR cpe:2.3:h:mitsubishielectric:r12ccpu-v:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 07, 2022
Action Type Old Value New Value Changed Description Uncontrolled resource consumption in MELSEC iQ-R series C Controller Module R12CCPU-V all versions allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery. Uncontrolled resource consumption in Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery. -
Modified Analysis by [email protected]
Nov. 28, 2021
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 17, 2021
Action Type Old Value New Value Changed Description Uncontrolled resource consumption in MELSEC iQ-R series C Controller Module R12CCPU-V all versions allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. Uncontrolled resource consumption in MELSEC iQ-R series C Controller Module R12CCPU-V all versions allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery. -
CVE Modified by [email protected]
Nov. 10, 2021
Action Type Old Value New Value Changed Description Uncontrolled resource consumption in MELSEC iQ-R series C Controller Module R12CCPU-V all versions allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery. Uncontrolled resource consumption in MELSEC iQ-R series C Controller Module R12CCPU-V all versions allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. -
CVE Modified by [email protected]
Nov. 03, 2021
Action Type Old Value New Value Changed Description Uncontrolled resource consumption in MELSEC iQ-R series C Controller Module R12CCPU-V all versions allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. Uncontrolled resource consumption in MELSEC iQ-R series C Controller Module R12CCPU-V all versions allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery. -
Initial Analysis by [email protected]
Oct. 15, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://jvn.jp/vu/JVNVU94914666/index.html No Types Assigned https://jvn.jp/vu/JVNVU94914666/index.html Third Party Advisory Changed Reference Type https://us-cert.cisa.gov/ics/advisories/icsa-21-280-04 No Types Assigned https://us-cert.cisa.gov/ics/advisories/icsa-21-280-04 Third Party Advisory, US Government Resource Changed Reference Type https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-015_en.pdf No Types Assigned https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-015_en.pdf Vendor Advisory Added CWE NIST CWE-400 Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:r12ccpu-v_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:r12ccpu-v:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-20600 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-2021-20600
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.56 }} 0.07%
score
0.77686
percentile