USN-3353-3: Heimdal vulnerability
24 July 2017
Heimdal could allow unintended access to network services.
Releases
Packages
- heimdal - Heimdal Kerberos Network Authentication Protocol
Details
USN-3353-1 fixed a vulnerability in Heimdal. This update provides
the corresponding updade for Ubuntu 12.04 ESM.
Original advisory 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 12.04
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-3353-1: libroken18-heimdal, heimdal-servers-x, libkdc2-heimdal, libkadm5srv8-heimdal, libkrb5-26-heimdal, libhdb9-heimdal, heimdal-servers, libgssapi3-heimdal, libhcrypto4-heimdal, heimdal-multidev, libhx509-5-heimdal, libkafs0-heimdal, heimdal-clients-x, heimdal-kdc, libotp0-heimdal, heimdal-clients, heimdal-docs, libasn1-8-heimdal, libkadm5clnt7-heimdal, libheimbase1-heimdal, libwind0-heimdal, heimdal, heimdal-dev, heimdal-kcm, libheimntlm0-heimdal, libsl0-heimdal
- USN-3353-2: libsmbclient, samba-testsuite, registry-tools, smbclient, samba-dev, samba-common, libsmbclient-dev, libsmbsharemodes0, ctdb, samba-vfs-modules, libwbclient-dev, python-samba, samba-dsdb-modules, libwbclient0, samba-doc, libparse-pidl-perl, samba, libnss-winbind, libpam-smbpass, samba-libs, winbind, libpam-winbind, libsmbsharemodes-dev, samba-common-bin