Improper Locking Affecting openssl package, versions <3.0.7-2


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.12% (48th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-OPENSSL-3168235
  • published14 Dec 2022
  • disclosed13 Dec 2022

Introduced: 13 Dec 2022

CVE-2022-3996  (opens in a new tab)
CWE-667  (opens in a new tab)

How to fix?

Upgrade Debian:unstable openssl to version 3.0.7-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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&#39; 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.

CVSS Scores

version 3.1