Resource exhaustion in Mitsubishi Electric products - CVE-2020-5603

Vulnerability identifier: #VU29430

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2020-5603

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Mitsubishi Electric

Affected software:
CPU Module Logging Configuration Tool
CW Configurator
EM Software Development Kit
GT Designer3
GX LogViewer
GX Works2
GX Works3
M_CommDTM-HART
M_CommDTM-IO-Link
MELFA-Works
MELSEC-L Flexible High-Speed I/O Control Module Configuration Tool
MELSOFT FieldDeviceConfigurator
MELSOFT iQ AppPortal
MELSOFT Navigator
MI Configurator
Motion Control Setting
MR Configurator2
MT Works2
RT ToolBox2
RT ToolBox3

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://jvn.jp/en/vu/JVNVU90307594/index.html
• https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-004_en.pdf