Is CVE-2022-3996 in the CISA KEV catalog?

No. CVE-2022-3996 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-3996?

CVE-2022-3996 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-3996?

CVE-2022-3996 has an EPSS score of 1.23% (65th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-3996?

Upgrade openssl on debian 12 to 3.0.7-2 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2022-3996

HIGH

7.5

CVSS v3

NVD

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.

CWE-667

How to fix

Remediation Available

opensslDebian

Fixed in:3.0.7-2CVE-2022-3996

libssl-docUbuntu

Fixed in:1.0.1f-1ubuntu2.27+esm7USN-6039-1

Fixed in:1.0.2g-1ubuntu4.20+esm7USN-6039-1

Fixed in:1.1.1-1ubuntu2.1~18.04.22USN-6039-1

Fixed in:1.1.1f-1ubuntu2.18USN-6039-1

Fixed in:3.0.2-0ubuntu1.9USN-6039-1

Fixed in:3.0.5-2ubuntu2.2USN-6039-1

Fixed in:3.0.8-1ubuntu1.1USN-6039-1

libssl1.0.0Ubuntu

Fixed in:1.0.1f-1ubuntu2.27+esm7USN-6039-1

Fixed in:1.0.2g-1ubuntu4.20+esm7USN-6039-1

Fixed in:1.0.2n-1ubuntu5.12USN-6039-1

libssl1.1Ubuntu

Fixed in:1.1.1-1ubuntu2.1~18.04.22USN-6039-1

Fixed in:1.1.1f-1ubuntu2.18USN-6039-1

libssl3Ubuntu

Fixed in:3.0.2-0ubuntu1.9USN-6039-1

Fixed in:3.0.5-2ubuntu2.2USN-6039-1

Fixed in:3.0.8-1ubuntu1.1USN-6039-1

opensslUbuntu

Fixed in:1.0.1f-1ubuntu2.27+esm7USN-6039-1

Fixed in:1.0.2g-1ubuntu4.20+esm7USN-6039-1

Fixed in:1.1.1-1ubuntu2.1~18.04.22USN-6039-1

Fixed in:1.1.1f-1ubuntu2.18USN-6039-1

Fixed in:3.0.2-0ubuntu1.9USN-6039-1

Fixed in:3.0.5-2ubuntu2.2USN-6039-1

Fixed in:3.0.8-1ubuntu1.1USN-6039-1

openssl1.0Ubuntu

Fixed in:1.0.2n-1ubuntu5.12USN-6039-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.23%probability of exploitation in 30 days

65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

openssl.org

Other references1

security.netapp.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.