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: samba, libsmbclient
- USN-3353-1: libwind0-heimdal, libheimntlm0-heimdal, libkrb5-26-heimdal, libhcrypto4-heimdal, heimdal-dev, heimdal-kdc, heimdal-multidev, libhx509-5-heimdal, heimdal-servers, libkafs0-heimdal, heimdal-docs, libasn1-8-heimdal, libkadm5clnt7-heimdal, heimdal-servers-x, libheimbase1-heimdal, heimdal-kcm, heimdal, libkdc2-heimdal, libsl0-heimdal, libhdb9-heimdal, libroken18-heimdal, libkadm5srv8-heimdal, heimdal-clients, heimdal-clients-x, libotp0-heimdal, libgssapi3-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