CVE-2022-41916

Publication date 15 November 2022

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
heimdal	24.04 LTS noble	Vulnerable
	23.10 mantic	Ignored
	23.04 lunar	Ignored
	22.10 kinetic	Ignored
	22.04 LTS jammy	Vulnerable
	20.04 LTS focal	Fixed 7.7.0+dfsg-1ubuntu1.2
	18.04 LTS bionic	Fixed 7.5.0+dfsg-1ubuntu0.2
	16.04 LTS xenial	Fixed 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 Ubuntu Pro
	14.04 LTS trusty	Fixed 1.6~git20131207+dfsg-1ubuntu1.2+esm2 Ubuntu Pro

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
heimdal	Upstream: eb87af0

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-5766-1
Heimdal vulnerability
7 December 2022