CVE-2020-13531 Use after free in Pixar

High 8.8 Published 3 Dec 2020 Updated 4 Aug 2024

A use-after-free in Pixar OpenUSD allows arbitrary code execution when a victim opens a specially crafted USD file.

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-2020-13531?

CVE-2020-13531 is a high-severity use after free vulnerability in Pixar, published on 3 Dec 2020. 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 use-after-free vulnerability exists in a way Pixar OpenUSD 20.08 processes reference paths textual USD files. A specially crafted file can trigger the reuse of a freed memory which can result in further memory corruption and arbitrary code execution. To trigger this vulnerability, the victim needs to open an attacker-provided malformed file.

Weakness: CWE-416

Which versions are affected by CVE-2020-13531?

It affects 1 product.

Products include Pixar Openusd.

How do I fix CVE-2020-13531?

No fix has been published for CVE-2020-13531 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2020-13531 being exploited?

There is no known exploitation of CVE-2020-13531 in the wild and no public exploit code.

Sources

Also known as GHSA-84rj-w682-g977.