CVE-2018-16766 Denial of service in n/a

High 8.8 Published 10 Sep 2018 Updated 5 Aug 2024

A crafted file can cause the WebAssembly Virtual Machine to crash, resulting in a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2018-16766?

CVE-2018-16766 is a high-severity denial of service vulnerability in n/a, published on 10 Sep 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In WAVM through 2018-07-26, a crafted file sent to the WebAssembly Virtual Machine may cause a denial of service (application crash) or possibly have unspecified other impact because Errors::unreachable() is reached.

Weakness: CWE-670

Which versions are affected by CVE-2018-16766?

It affects 1 product.

Products include Webassembly Virtual Machine Project Webassembly Virtual Machine.

How do I fix CVE-2018-16766?

No fix has been published for CVE-2018-16766 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-2018-16766 being exploited?

There is no known exploitation of CVE-2018-16766 in the wild and no public exploit code.

Sources

Also known as GHSA-gpcc-mw99-4pg6.