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CVE-2021-3474

5.3 · MEDIUM

There's a flaw in OpenEXR in versions before 3.0.0-beta.

Published Mar 30, 2021CWE-190EPSS 1.85%

Overview

CVE-2021-3474 is a medium-severity vulnerability. It was published on March 30, 2021 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

There's a flaw in OpenEXR in versions before 3.0.0-beta. A crafted input file that is processed by OpenEXR could cause a shift overflow in the FastHufDecoder, potentially leading to problems with application availability.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugs.chromium.org/p/oss-fuzz/issues/detail?id=24831Refbugzilla.redhat.com/show_bug.cgi?id=1939142Reflists.debian.org/debian-lts-announce/2021/07/msg00001.htmlReflists.debian.org/debian-lts-announce/2022/12/msg00022.htmlRefsecurity.gentoo.org/glsa/202107-27Refbugs.chromium.org/p/oss-fuzz/issues/detail?id=24831Refbugzilla.redhat.com/show_bug.cgi?id=1939142Reflists.debian.org/debian-lts-announce/2021/07/msg00001.htmlReflists.debian.org/debian-lts-announce/2022/12/msg00022.htmlRefsecurity.gentoo.org/glsa/202107-27

How CyberStrike helps

Frequently asked questions

What is CVE-2021-3474?

CVE-2021-3474 is a medium-severity vulnerability. It was published on March 30, 2021 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2021-3474?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-3474?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-3474?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-3474 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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