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CVE-2022-3996

7.5 · HIGH

If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively.

Published Dec 13, 2022CWE-667EPSS 1.31%

Overview

CVE-2022-3996 is a high-severity vulnerability. It was published on December 13, 2022 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

If an X.509 certificate contains a malformed policy constraint and

policy processing is enabled, then a write lock will be taken twice

recursively. On some operating systems (most widely: Windows) this

results in a denial of service when the affected process hangs. Policy

processing being enabled on a publicly facing server is not considered

to be a common setup.

Policy processing is enabled by passing the `-policy'

argument to the command line utilities or by calling the

`X509_VERIFY_PARAM_set1_policies()' function.

Update (31 March 2023): The description of the policy processing enablement

was corrected based on CVE-2023-0466.

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/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7Refwww.openssl.org/news/secadv/20221213.txtGitHubgithub.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7Refsecurity.netapp.com/advisory/ntap-20230203-0003/Refwww.openssl.org/news/secadv/20221213.txt

How CyberStrike helps

Frequently asked questions

What is CVE-2022-3996?

CVE-2022-3996 is a high-severity vulnerability. It was published on December 13, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2022-3996?

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-2022-3996?

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-2022-3996?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-3996 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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