CVE-2021-3478 Denial of service in OpenEXR
An attacker can cause excessive memory consumption and system unavailability by submitting a crafted file to OpenEXR.
- 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-2021-3478?
CVE-2021-3478 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 input file functionality in versions before 3.0.0-beta. An attacker able to submit a crafted file to be processed by OpenEXR could consume excessive system memory. The greatest impact of this flaw is to system availability.
Which versions are affected by CVE-2021-3478?
It affects 2 products.
Products include Debian Debian Linux, Openexr Openexr.
How do I fix CVE-2021-3478?
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-2021-3478 being exploited?
There is no known exploitation of CVE-2021-3478 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2021-3478, GHSA-fwcc-9735-qjcm, UBUNTU-CVE-2021-3478.