USN-3353-1: Heimdal vulnerability
14 July 2017
Heimdal could allow unintended access to network services.
Releases
Packages
- heimdal - Heimdal Kerberos Network Authentication Protocol
Details
Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
that Heimdal clients incorrectly trusted unauthenticated portions
of Kerberos tickets. A remote attacker could use this to impersonate
trusted network services or perform other attacks.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 17.04
Ubuntu 16.10
Ubuntu 16.04
Ubuntu 14.04
After a standard system update you need to restart any applications
using Heimdal libraries to make all the necessary changes.
References
Related notices
- USN-3353-4: libsmbclient, samba
- USN-3353-3: heimdal, libkrb5-26-heimdal
- USN-3353-2: winbind, registry-tools, libnss-winbind, samba-dsdb-modules, libpam-smbpass, samba-doc, libsmbclient-dev, samba-testsuite, samba, libpam-winbind, libparse-pidl-perl, samba-dev, samba-libs, libwbclient-dev, libsmbsharemodes0, python-samba, libsmbsharemodes-dev, smbclient, ctdb, libwbclient0, samba-common-bin, samba-vfs-modules, libsmbclient, samba-common