CVE-2021-3479 Denial of service in OpenEXR
An attacker can cause a denial of service by submitting a crafted file to OpenEXR, leading to excessive memory consumption.
- 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
- Available
What is CVE-2021-3479?
CVE-2021-3479 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 31 Mar 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
There's a flaw in OpenEXR's Scanline API functionality in versions before 3.0.0-beta. An attacker who is able to submit a crafted file to be processed by OpenEXR could trigger excessive consumption of memory, resulting in an impact to system availability.
Which versions are affected by CVE-2021-3479?
It affects 2 products.
Products include Debian Debian Linux, Openexr Openexr.
How do I fix CVE-2021-3479?
Upgrade to a fixed version.
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-2021-3479 being exploited?
There is no known exploitation of CVE-2021-3479 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-44244, DEBIAN-CVE-2021-3479, GHSA-vv3j-gmj6-g343, UBUNTU-CVE-2021-3479.