CVE-2021-44047 Use after free in n/a

High 7.8 Published 5 Dec 2021 Updated 4 Aug 2024

A use-after-free in the Drawings SDK allows remote code execution via crafted DWF/DWFX files, impacting applications using this library.

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-2021-44047?

CVE-2021-44047 is a high-severity use after free vulnerability in n/a, published on 5 Dec 2021. 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 use-after-free vulnerability exists when reading a DWF/DWFX file using Open Design Alliance Drawings SDK before 2022.11. The specific issue exists with parsing DWF/DWFX files. Crafted data in a DWF/DWFX file and lack of proper validation of input data can trigger a write operation past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Weakness: CWE-416

Which versions are affected by CVE-2021-44047?

It affects 1 product.

Products include Opendesign Drawings Sdk.

How do I fix CVE-2021-44047?

No fix has been published for CVE-2021-44047 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-2021-44047 being exploited?

There is no known exploitation of CVE-2021-44047 in the wild and no public exploit code.

Sources

Also known as GHSA-ch5j-vx43-x3h2.