CVE-2021-46055 Denial of service in n/a

Medium 5.5 Published 7 Jan 2022 Updated 4 Aug 2024

An attacker can cause a denial of service in Binaryen via an assertion abort when processing specific WebAssembly rethrow instructions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-46055?

CVE-2021-46055 is a medium-severity denial of service vulnerability in n/a, published on 7 Jan 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A Denial of Service vulnerability exists in Binaryen 104 due to an assertion abort in wasm::WasmBinaryBuilder::visitRethrow(wasm::Rethrow*).

Weakness: CWE-617

Which versions are affected by CVE-2021-46055?

It affects 1 product.

Products include Webassembly Binaryen.

How do I fix CVE-2021-46055?

No fix has been published for CVE-2021-46055 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-2021-46055 being exploited?

There is no known exploitation of CVE-2021-46055 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2021-46055, GHSA-8qxr-qg3c-8m2w, UBUNTU-CVE-2021-46055.