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Test ID:1.3.6.1.4.1.25623.1.0.149017
Category:Denial of Service
Title:OpenSSL: X.509 Policy Constraints Double Locking Vulnerability (Dec 2022) - Windows
Summary:OpenSSL is prone to a denial of service (DoS) vulnerability.
Description:Summary:
OpenSSL is prone to a denial of service (DoS) vulnerability.

Vulnerability Insight:
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 Software/OS:
OpenSSL versions 3.0.0 through 3.0.7.

Solution:
Update to version 3.0.8 or later.

CVSS Score:
7.8

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2022-3996
OpenSSL Advisory
https://www.openssl.org/news/secadv/20221213.txt
https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
CopyrightCopyright (C) 2022 Greenbone Networks GmbH

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