CVE-2018-16523 Denial of service in n/a

High 7.4 Published 6 Dec 2018 Updated 5 Aug 2024

A division by zero error in the FreeRTOS TCP/IP stack allows attackers to cause a denial of service condition.

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-2018-16523?

CVE-2018-16523 is a high-severity denial of service vulnerability in n/a, published on 6 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Amazon Web Services (AWS) FreeRTOS through 1.3.1, FreeRTOS up to V10.0.1 (with FreeRTOS+TCP), and WITTENSTEIN WHIS Connect middleware TCP/IP component allow division by zero in prvCheckOptions.

Weakness: CWE-369

Which versions are affected by CVE-2018-16523?

It affects 2 products.

Products include Amazon Amazon Web Services Freertos, Amazon Freertos.

How do I fix CVE-2018-16523?

No fix has been published for CVE-2018-16523 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-2018-16523 being exploited?

There is no known exploitation of CVE-2018-16523 in the wild and no public exploit code.

Sources

Also known as GHSA-c75x-6682-hrm4.