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 either `X509_VERIFY_PARAM_add0_policy()' or `X509_VERIFY_PARAM_set1_policies()' functions.

Affected Packages

crates.io openssl-src

Affected versions: 300.0.0 (fixed in 300.0.12)

Related CVEs

CVE-2022-3996

Key Information

GHSA ID

GHSA-vr8j-hgmm-jh9r

Published

December 13, 2022 6:30 PM

Last Modified

October 2, 2024 6:03 PM

CVSS Score

7.5 /10

Primary Ecosystem

crates.io

Primary Package

openssl-src

GitHub Reviewed

✓ Yes

Dataset

Last updated: September 21, 2025 6:29 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.