CVE-2020-28594 Use after free in Prusa Research

High 8.8 Published 17 Aug 2021 Updated 4 Aug 2024

A use-after-free flaw in PrusaSlicer allows attackers to execute arbitrary code via a specially crafted 3MF 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-2020-28594?

CVE-2020-28594 is a high-severity use after free vulnerability in Prusa Research, published on 17 Aug 2021. 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 the _3MF_Importer::_handle_end_model() functionality of Prusa Research PrusaSlicer 2.2.0 and Master (commit 4b040b856). A specially crafted 3MF file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Weakness: CWE-416

Which versions are affected by CVE-2020-28594?

It affects 1 product.

Products include Prusa3d Prusaslicer.

How do I fix CVE-2020-28594?

No fix has been published for CVE-2020-28594 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-2020-28594 being exploited?

There is no known exploitation of CVE-2020-28594 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2020-28594, GHSA-22g3-xr7w-8vqq, UBUNTU-CVE-2020-28594.