CVE-2016-8374 Denial of service in Schneider Electric Magelis HMI

High 7.5 Published Updated

An attacker can cause a denial of service on Schneider Electric Magelis HMI panels by triggering uncontrolled resource consumption in the web server.

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-2016-8374?

CVE-2016-8374 is a high-severity denial of service vulnerability in Schneider Electric Magelis HMI, published on 13 Feb 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Schneider Electric Magelis HMI Magelis GTO Advanced Optimum Panels, all versions, Magelis GTU Universal Panel, all versions, Magelis STO5xx and STU Small panels, all versions, Magelis XBT GH Advanced Hand-held Panels, all versions, Magelis XBT GK Advanced Touchscreen Panels with Keyboard, all versions, Magelis XBT GT Advanced Touchscreen Panels, all versions, and Magelis XBT GTW Advanced Open Touchscreen Panels (Windows XPe). An attacker may be able to disrupt a targeted web server, resulting in a denial of service because of UNCONTROLLED RESOURCE CONSUMPTION.

Weakness: CWE-400

Which versions are affected by CVE-2016-8374?

It affects 8 products.

Products include Schneider-Electric Magelis Gto Advanced Optimum Panel Firmware, Schneider-Electric Magelis Gtu Universal Panel Firmware, Schneider-Electric Magelis Sto5 Small Panel Firmware, Schneider-Electric Magelis Stu Small Panel Firmware, Schneider-Electric Magelis Xbt Gh Advanced Hand-Held Panel Firmware, Schneider-Electric Magelis Xbt Gk Advanced Touchscreen Panel With Keyboard Firmware and 2 more.

How do I fix CVE-2016-8374?

No fix has been published for CVE-2016-8374 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-2016-8374 being exploited?

There is no known exploitation of CVE-2016-8374 in the wild and no public exploit code.

Sources

Also known as GHSA-xjrm-79vq-7xrv.

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