CVE-2019-7700 Memory corruption in n/a

Medium 6.5 Published 10 Feb 2019 Updated 4 Aug 2024

A heap-based buffer over-read in Binaryen allows attackers to cause a denial of service via crafted WebAssembly input.

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: Available

What is CVE-2019-7700?

CVE-2019-7700 is a medium-severity memory corruption vulnerability in n/a, published on 10 Feb 2019. 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

A heap-based buffer over-read was discovered in wasm::WasmBinaryBuilder::visitCall in wasm-binary.cpp in Binaryen 1.38.22. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm-merge.

Weakness: CWE-125

Which versions are affected by CVE-2019-7700?

It affects 1 product.

Products include Webassembly Binaryen.

How do I fix CVE-2019-7700?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-7700 being exploited?

There is no known exploitation of CVE-2019-7700 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2019-7700, GHSA-ggj8-g5w9-5x4p, UBUNTU-CVE-2019-7700.