CVE-2022-41916

MEDIUM

5.9

CVSS v3

Description

Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. Users should upgrade to Heimdal 7.7.1 or 7.8. There are no known workarounds for this issue.

CWE-193

How to fix

Remediation Available

heimdalDebian

Fixed in:7.7.0+dfsg-2+deb11u2CVE-2022-41916

Fixed in:7.8.git20221115.a6cf945+dfsg-1CVE-2022-41916

heimdalUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm2USN-5766-1

Fixed in:1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2USN-5766-1

Fixed in:7.5.0+dfsg-1ubuntu0.2USN-5766-1

Fixed in:7.7.0+dfsg-1ubuntu1.2USN-5766-1

libwind0-heimdalUbuntu

Fixed in:1.6~git20131207+dfsg-1ubuntu1.2+esm2USN-5766-1

Fixed in:1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2USN-5766-1

Fixed in:7.5.0+dfsg-1ubuntu0.2USN-5766-1

Fixed in:7.7.0+dfsg-1ubuntu1.2USN-5766-1

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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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.89%probability of exploitation in 30 days

56thpercentile

Moderate risk: more likely to be exploited than 56% of all known CVEs.

References

Third-Party Advisory3

Other references2

Related Vulnerabilities

Other CWE-193 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-3156	High	7.8	99%	KEV	Fix
CVE-2003-0466	Critical	9.8	78%	-	-
CVE-2023-44444	High	7.8	56%	-	Fix
CVE-2021-23017	High	7.7	53%	-	Fix
CVE-2023-28709	High	7.5	50%	-	Fix
CVE-2018-8828	Critical	9.8	31%	-	Fix

Common questions

How do I fix CVE-2022-41916?

Published advisories record a fix for 3 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2022-41916 being actively exploited?

Not that we know of. CVE-2022-41916 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.89% is the estimated probability that it will be exploited in the next 30 days. That is higher than 56% of all scored CVEs.

How severe is CVE-2022-41916?

CVE-2022-41916 has a CVSS v3 base score of 5.9, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2022-41916 affect?

Published advisories record a fix for heimdal (Debian), heimdal (Ubuntu), libwind0-heimdal (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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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.