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CVE-2021-4214

5.5 · MEDIUM

A heap overflow flaw was found in libpngs' pngimage.c program.

Published Aug 24, 2022CWE-120EPSS 0.52%

Overview

CVE-2021-4214 is a medium-severity vulnerability. It was published on August 24, 2022 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

A heap overflow flaw was found in libpngs' pngimage.c program. This flaw allows an attacker with local network access to pass a specially crafted PNG file to the pngimage utility, causing an application to crash, leading to a denial of service.

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

Refaccess.redhat.com/security/cve/CVE-2021-4214Refbugzilla.redhat.com/show_bug.cgi?id=2043393GitHubgithub.com/glennrp/libpng/issues/302Refsecurity-tracker.debian.org/tracker/CVE-2021-4214Refsecurity.netapp.com/advisory/ntap-20221020-0001/Refaccess.redhat.com/security/cve/CVE-2021-4214Refbugzilla.redhat.com/show_bug.cgi?id=2043393GitHubgithub.com/glennrp/libpng/issues/302Refsecurity-tracker.debian.org/tracker/CVE-2021-4214Refsecurity.netapp.com/advisory/ntap-20221020-0001/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-4214?

CVE-2021-4214 is a medium-severity vulnerability. It was published on August 24, 2022 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-4214?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-4214?

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-2021-4214?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-4214 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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