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: samba, libsmbclient
- USN-3353-3: libkrb5-26-heimdal, heimdal
- USN-3353-2: libsmbclient-dev, samba-doc, libsmbsharemodes0, libsmbsharemodes-dev, samba-dev, libparse-pidl-perl, libsmbclient, samba-common, samba-common-bin, samba-testsuite, libnss-winbind, winbind, libpam-winbind, libwbclient-dev, samba-dsdb-modules, samba, ctdb, libwbclient0, registry-tools, samba-libs, smbclient, python-samba, libpam-smbpass, samba-vfs-modules