CVE-2021-3933

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-03-25 · updated 2026-06-17
Weakness: CWE-190

Description

An integer overflow could occur when OpenEXR processes a crafted file on systems where size_t < 64 bits. This could cause an invalid bytesPerLine and maxBytesPerLine value, which could lead to problems with application stability or lead to other attack paths.

Affected products

Debian Linux: 10.0, 11.0
Fedoraproject Fedora: 36
AcademySoftwareFoundation openexr: before 3.1.2 — fixed in 3.1.2

How to fix

Upgrade to a fixed version: AcademySoftwareFoundation openexr 3.1.2. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2019783
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I2JSMJ7HLWFPYYV7IAQZD5ZUUUN7RWBN/
https://security.gentoo.org/glsa/202210-31
https://www.debian.org/security/2022/dsa-5299
https://bugzilla.redhat.com/show_bug.cgi?id=2019783
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I2JSMJ7HLWFPYYV7IAQZD5ZUUUN7RWBN/
https://security.gentoo.org/glsa/202210-31
https://www.debian.org/security/2022/dsa-5299

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