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CVE-2022-36227

9.8 · CRITICAL

In libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer…

Published Nov 22, 2022CWE-476EPSS 2.44%

Overview

CVE-2022-36227 is a critical-severity vulnerability. It was published on November 22, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference. NOTE: the discoverer cites this CWE-476 remark but third parties dispute the code-execution impact: "In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution."

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.gentoo.org/882521GitHubgithub.com/libarchive/libarchive/blob/v3.0.0a/libarchive/archive_write.c#L215GitHubgithub.com/libarchive/libarchive/issues/1754Reflists.debian.org/debian-lts-announce/2023/01/msg00034.htmlReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V67OO2UUQAUJS3IK4JZPF6F3LUCBU6IS/Refsecurity.gentoo.org/glsa/202309-14Refbugs.gentoo.org/882521GitHubgithub.com/libarchive/libarchive/blob/v3.0.0a/libarchive/archive_write.c#L215GitHubgithub.com/libarchive/libarchive/issues/1754Reflists.debian.org/debian-lts-announce/2023/01/msg00034.html

How CyberStrike helps

Frequently asked questions

What is CVE-2022-36227?

CVE-2022-36227 is a critical-severity vulnerability. It was published on November 22, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2022-36227?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-36227?

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-2022-36227?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-36227 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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