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AUSCERT External Security Bulletin Redistribution
USN-4900-1: OpenEXR vulnerabilities
6 April 2021
AusCERT Security Bulletin Summary
Operating System: UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
CVE Names: CVE-2021-3479 CVE-2021-3478 CVE-2021-3477
CVE-2021-3476 CVE-2021-3475 CVE-2021-3474
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running OpenEXR check for an updated version of the software for
their operating system.
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USN-4900-1: OpenEXR vulnerabilities
01 April 2021
Several security issues were fixed in OpenEXR.
o Ubuntu 20.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
o openexr - tools for the OpenEXR image format
It was discovered that OpenEXR incorrectly handled certain malformed EXR
image files. If a user were tricked into opening a crafted EXR image file,
a remote attacker could cause a denial of service, or possibly execute
The problem can be corrected by updating your system to the following package
o openexr - 2.5.3-2ubuntu0.2
o libopenexr25 - 2.5.3-2ubuntu0.2
o openexr - 2.3.0-6ubuntu0.5
o libopenexr24 - 2.3.0-6ubuntu0.5
o openexr - 2.2.0-11.1ubuntu1.6
o libopenexr22 - 2.2.0-11.1ubuntu1.6
o openexr - 2.2.0-10ubuntu2.6
o libopenexr22 - 2.2.0-10ubuntu2.6
In general, a standard system update will make all the necessary changes.
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