CVE-2021-20296 Null dereference in OpenEXR

What is CVE-2021-20296?

CVE-2021-20296 is a medium-severity vulnerability in Debian Debian Linux, published on 1 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw was found in OpenEXR in versions before 3.0.0-beta. A crafted input file supplied by an attacker, that is processed by the Dwa decompression functionality of OpenEXR's IlmImf library, could cause a NULL pointer dereference. The highest threat from this vulnerability is to system availability.

Weakness: CWE-476

Which versions are affected by CVE-2021-20296?

It affects 2 products.

Products include Debian Debian Linux, Openexr Openexr.

How do I fix CVE-2021-20296?

Upgrade to a fixed version.

Is CVE-2021-20296 being exploited?

There is no known exploitation of CVE-2021-20296 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-44505, DEBIAN-CVE-2021-20296, GHSA-h585-99w7-8g9c, UBUNTU-CVE-2021-20296.