CVE-2017-17443 Denial of service in n/a

Medium 6.5 Published Updated

Attackers with file system access can crash the OPC Foundation Local Discovery Server by modifying its configuration file, causing service unavailability.

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

What is CVE-2017-17443?

CVE-2017-17443 is a medium-severity denial of service vulnerability in n/a, published on 13 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

OPC Foundation Local Discovery Server (LDS) 1.03.370 required a security update to resolve multiple vulnerabilities that allow attackers to trigger a crash by placing invalid data into the configuration file. This vulnerability requires an attacker with access to the file system where the configuration file is stored; however, if the configuration file is altered the LDS will be unavailable until it is repaired.

Weakness: CWE-20

Which versions are affected by CVE-2017-17443?

It affects 1 product.

Products include Opcfoundation Local Discovery Server.

How do I fix CVE-2017-17443?

No fix has been published for CVE-2017-17443 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-2017-17443 being exploited?

There is no known exploitation of CVE-2017-17443 in the wild and no public exploit code.

Sources

Also known as GHSA-47f2-fccf-w99j.

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