CVE-2022-3996

X.509 Policy Constraints Double Locking

Published Dec 13, 2022 CVSS 3.1 · 7.5 High EPSS 1.3% KEV · Not listed
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

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2022-7750 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.
Github GHSA Github GHSA GHSA-vr8j-hgmm-jh9r Denial of service by double-checked locking in openssl-src
Ubuntu USN Ubuntu USN USN-6039-1 OpenSSL vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
openssl
Published
Updated
Aug 3, 2024, 1:27 AM
Reserved
Nov 15, 2022, 11:47 AM
Status
Modified
Published
Dec 13, 2022, 4:15 PM
Modified
Jun 17, 2026, 5:00 AM
Severity
Low
Public date
Dec 13, 2022, 12:00 AM