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CVE-2021-29482

7.5 · HIGH

xz is a compression and decompression library focusing on the xz format completely written in Go.

Published Apr 28, 2021CWE-835EPSS 1.44%

Overview

CVE-2021-29482 is a high-severity vulnerability. It was published on April 28, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

xz is a compression and decompression library focusing on the xz format completely written in Go. The function readUvarint used to read the xz container format may not terminate a loop provide malicous input. The problem has been fixed in release v0.5.8. As a workaround users can limit the size of the compressed file input to a reasonable size for their use case. The standard library had recently the same issue and got the CVE-2020-16845 allocated.

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

GitHubgithub.com/ulikunitz/xz/commit/69c6093c7b2397b923acf82cb378f55ab2652b9bGitHubgithub.com/ulikunitz/xz/security/advisories/GHSA-25xm-hr59-7c27GitHubgithub.com/ulikunitz/xz/commit/69c6093c7b2397b923acf82cb378f55ab2652b9bGitHubgithub.com/ulikunitz/xz/security/advisories/GHSA-25xm-hr59-7c27

How CyberStrike helps

Frequently asked questions

What is CVE-2021-29482?

CVE-2021-29482 is a high-severity vulnerability. It was published on April 28, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-29482?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-29482?

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-2021-29482?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-29482 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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