CVE-2017-18353 rendertron can remotely shut down Chrome instance

High 7.5 Published Updated

An unauthorized remote attacker can shut down the Chrome instance by accessing an unprotected route, causing a denial of service.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2017-18353?

CVE-2017-18353 is a high-severity missing authorization vulnerability in n/a, published on 17 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Rendertron 1.0.0 includes an _ah/stop route to shutdown the Chrome instance responsible for serving render requests to all users. Visiting this route with a GET request allows any unauthorized remote attacker to disable the core service of the application.

Which versions are affected by CVE-2017-18353?

2 open source packages ship an affected version, including rendertron. It affects 1 product.

PackageAffectedFixed in
rendertron npmAll versions1.1.0
rendertron npmAll versions1.1.0

Products include Google Rendertron.

How do I fix CVE-2017-18353?

Upgrade rendertron to 1.1.0 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2017-18353 being exploited?

There is no known exploitation of CVE-2017-18353 in the wild and no public exploit code.

Sources

Also known as GHSA-4q69-q4q7-x82c.

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