Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2021-20586

Disclosure Date: January 29, 2021 •
CVE-2021-20586 CVSS v3 Base Score: 7.5
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Description

Resource management errors vulnerability in a robot controller of MELFA FR Series(controller “CR800-*V*D” of RV-FR**-D-* all versions, controller “CR800-*HD” of RH-FRH**-D-* all versions, controller “CR800-*HRD” of RH-FRHR**-D-* all versions, controller “CR800-*V*R with R16RTCPU” of RV-FR**-R-* all versions, controller “CR800-*HR with R16RTCPU” of RH-FRH**-R-* all versions, controller “CR800-*HRR with R16RTCPU” of RH-FRHR**-R-* all versions, controller “CR800-*V*Q with Q172DSRCPU” of RV-FR**-Q-* all versions, controller “CR800-*HQ with Q172DSRCPU” of RH-FRH**-Q-* all versions, controller “CR800-*HRQ with Q172DSRCPU” of RH-FRHR**-Q-* all versions) and a robot controller of MELFA CR Series(controller “CR800-CVD” of RV-8CRL-D-* all versions, controller “CR800-CHD” of RH-CRH**-D- all versions) as well as a cooperative robot ASSISTA(controller “CR800-05VD” of RV-5AS-D-* all versions) allows a remote unauthenticated attacker to cause a DoS of the execution of the robot program and the Ethernet communication by sending a large amount of packets in burst over a short period of time. As a result of DoS, an error may occur. A reset is required to recover it if the error occurs.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
Robot Controller MELFA FR Series; Robot Controller CR Series; Cooperative Robot ASSISTA Controller "CR800-*V*D" of RV-*FR***-D-* all versions, Controller "CR800-*HD" of RH-*FRH***-D-* all versions, Controller "CR800-*HRD" of RH-*FRHR***-D-* all versions, Controller "CR800-*V*R with R16RTCPU" of RV-*FR***-R-* all versions, Controller "CR800-*HR with R16RTCPU" of RH-*FRH***-R-* all versions, Controller "CR800-*HRR with R16RTCPU" of RH-*FRHR***-R-* all versions, Controller "CR800-*V*Q with Q172DSRCPU" of RV-*FR***-Q-* all versions, Controller "CR800-*HQ with Q172DSRCPU" of RH-*FRH***-Q-* all versions, Controller "CR800-*HRQ with Q172DSRCPU" of RH-*FRHR***-Q-* all versions
Robot Controller MELFA FR Series; Robot Controller CR Series; Cooperative Robot ASSISTA Controller "CR800-CVD" of RV-8CRL-D-* all versions, Controller "CR800-CHD" of RH-*CRH**-D-* all versions
Robot Controller MELFA FR Series; Robot Controller CR Series; Cooperative Robot ASSISTA Controller "CR800-05VD" of RV-5AS-D-* all versions
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Additional Info

Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Technical Analysis