Buffer overflow in Mitsubishi Electric products - CVE-2020-5653
Published: November 2, 2020
Vulnerability identifier: #VU48070
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-5653
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error. A remote attacker can send a specially crafted packet, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
This vulnerability affects the following modules of MELSEC iQ-R Series:
- EtherNet/IP Network Interface Module, RJ71EIP91: First 2 digits of serial number are 02 or before.
- PROFINET IO Controller Module, RJ71PN92: First 2 digits of serial number are 01 or before
- High Speed Data Logger Module,RD81DL96: First 2 digits of serial number are 08 or before
- MES Interface Module, RD81MES96N: First 2 digits of serial number are 04 or before
- OPC UA Server Module, RD81OPC96: First 2 digits of serial number are 04 or before
Affected software
MELSEC iQ-R EtherNet/IP Network Interface Module
MELSEC iQ-R PROFINET IO Controller Module
MELSEC iQ-R High Speed Data Logger Module
MELSEC iQ-R MES Interface Module
MELSEC iQ-R OPC UA Server Module
MELSEC iQ-R PROFINET IO Controller Module
MELSEC iQ-R High Speed Data Logger Module
MELSEC iQ-R MES Interface Module
MELSEC iQ-R OPC UA Server Module
How to mitigate CVE-2020-5653
Install updates from vendor's website.
MELSEC iQ-R EtherNet/IP Network Interface Module - update to 03
MELSEC iQ-R PROFINET IO Controller Module - update to 02
MELSEC iQ-R High Speed Data Logger Module - update to 09
MELSEC iQ-R MES Interface Module - update to 05
MELSEC iQ-R OPC UA Server Module - update to 05
MELSEC iQ-R PROFINET IO Controller Module - update to 02
MELSEC iQ-R High Speed Data Logger Module - update to 09
MELSEC iQ-R MES Interface Module - update to 05
MELSEC iQ-R OPC UA Server Module - update to 05