Ubuntu Security Notice USN-5849-1
February 08, 2023
heimdal vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.04 LTS
– Ubuntu 18.04 LTS
– Ubuntu 16.04 ESM
– Ubuntu 14.04 ESM
Summary:
Heimdal could be made to crash if it received specially crafted
input.
Software Description:
– heimdal: Heimdal Kerberos Network Authentication Protocol
Details:
Helmut Grohne discovered that Heimdal GSSAPI incorrectly handled logical
conditions that are related to memory management operations.
An attacker could possibly use this issue to cause a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
libgssapi3-heimdal 7.7.0+dfsg-1ubuntu1.4
Ubuntu 18.04 LTS:
libgssapi3-heimdal 7.5.0+dfsg-1ubuntu0.4
Ubuntu 16.04 ESM:
libgssapi3-heimdal 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm4
Ubuntu 14.04 ESM:
libgssapi3-heimdal 1.6~git20131207+dfsg-1ubuntu1.2+esm4
After a standard system update you need to restart any application
using Heimdal libraries to make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5849-1
CVE-2022-45142
Package Information:
https://launchpad.net/ubuntu/+source/heimdal/7.7.0+dfsg-1ubuntu1.4
https://launchpad.net/ubuntu/+source/heimdal/7.5.0+dfsg-1ubuntu0.4
