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: libhx509-5-heimdal, libwind0-heimdal, libkafs0-heimdal, libotp0-heimdal, libroken18-heimdal, libkadm5clnt7-heimdal, heimdal-multidev, heimdal-dev, libhdb9-heimdal, libhcrypto4-heimdal, libsl0-heimdal, libheimntlm0-heimdal, heimdal-clients, heimdal-kdc, libasn1-8-heimdal, libgssapi3-heimdal, heimdal-clients-x, heimdal, heimdal-docs, heimdal-servers, libkadm5srv8-heimdal, libkdc2-heimdal, libkrb5-26-heimdal, heimdal-kcm, heimdal-servers-x, libheimbase1-heimdal
- USN-3353-2: samba-dsdb-modules, samba-common-bin, libwbclient-dev, python-samba, libsmbsharemodes0, libpam-winbind, samba-doc, samba-vfs-modules, samba, libpam-smbpass, libsmbsharemodes-dev, samba-testsuite, winbind, libwbclient0, samba-libs, samba-dev, smbclient, libnss-winbind, libsmbclient, registry-tools, libsmbclient-dev, libparse-pidl-perl, samba-common, ctdb