CVE-2020-5603 Denial of service in Mitsubishi Electoric FA Engineering Software

High 7.5 Published Updated

Attackers can cause denial of service in Mitsubishi Electric FA Engineering Software via uncontrolled resource consumption.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-5603?

CVE-2020-5603 is a high-severity denial of service vulnerability in Mitsubishi Electoric FA Engineering Software, published on 30 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Uncontrolled resource consumption vulnerability in Mitsubishi Electoric FA Engineering Software (CPU Module Logging Configuration Tool Ver. 1.94Y and earlier, CW Configurator Ver. 1.010L and earlier, EM Software Development Kit (EM Configurator) Ver. 1.010L and earlier, GT Designer3 (GOT2000) Ver. 1.221F and earlier, GX LogViewer Ver. 1.96A and earlier, GX Works2 Ver. 1.586L and earlier, GX Works3 Ver. 1.058L and earlier, M_CommDTM-HART Ver. 1.00A, M_CommDTM-IO-Link Ver. 1.02C and earlier, MELFA-Works Ver. 4.3 and earlier, MELSEC-L Flexible High-Speed I/O Control Module Configuration Tool Ver.1.004E and earlier, MELSOFT FieldDeviceConfigurator Ver. 1.03D and earlier, MELSOFT iQ AppPortal Ver. 1.11M and earlier, MELSOFT Navigator Ver. 2.58L and earlier, MI Configurator Ver. 1.003D and earlier, Motion Control Setting Ver. 1.005F and earlier, MR Configurator2 Ver. 1.72A and earlier, MT Works2 Ver. 1.156N and earlier, RT ToolBox2 Ver. 3.72A and earlier, and RT ToolBox3 Ver. 1.50C and earlier) allows an attacker to cause a denial of service (DoS) condition attacks via unspecified vectors.

Weakness: CWE-400

Which versions are affected by CVE-2020-5603?

It affects 20 products.

Products include Mitsubishielectric Cpu Module Logging Configuration Tool, Mitsubishielectric Cw Configurator, Mitsubishielectric Em Configurator, Mitsubishielectric Gt Designer3, Mitsubishielectric Gx Logviewer, Mitsubishielectric Gx Works2 and 14 more.

How do I fix CVE-2020-5603?

No fix has been published for CVE-2020-5603 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-5603 being exploited?

There is no known exploitation of CVE-2020-5603 in the wild and no public exploit code.

Sources

Also known as GHSA-v5gg-h569-48vg.

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