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CVE-2020-22916

5.5 · MEDIUM

An issue discovered in XZ 5.2.5 allows attackers to cause a denial of service via decompression of a crafted file.

Published Aug 22, 2023EPSS 0.25%

Overview

CVE-2020-22916 is a medium-severity vulnerability. It was published on August 22, 2023 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

An issue discovered in XZ 5.2.5 allows attackers to cause a denial of service via decompression of a crafted file. NOTE: the vendor disputes the claims of "endless output" and "denial of service" because decompression of the 17,486 bytes always results in 114,881,179 bytes, which is often a reasonable size increase.

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

Refweb.archive.org/web/20230918084612/https://github.com/snappyJack/CVE-request-XZ-5.2.5-has-denial-of-service-vulnerabilityRefbugzilla.redhat.com/show_bug.cgi?id=2234987Refbugzilla.suse.com/show_bug.cgi?id=1214590GitHubgithub.com/snappyJack/CVE-request-XZ-5.2.5-has-denial-of-service-vulnerabilityGitHubgithub.com/tukaani-project/xz/issues/61Refsecurity-tracker.debian.org/tracker/CVE-2020-22916Reftukaani.org/xz/Refweb.archive.org/web/20230918084612/https://github.com/snappyJack/CVE-request-XZ-5.2.5-has-denial-of-service-vulnerabilityRefbugzilla.redhat.com/show_bug.cgi?id=2234987Refbugzilla.suse.com/show_bug.cgi?id=1214590

How CyberStrike helps

Frequently asked questions

What is CVE-2020-22916?

CVE-2020-22916 is a medium-severity vulnerability. It was published on August 22, 2023 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2020-22916?

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-2020-22916?

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-2020-22916?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-22916 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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