USN-3353-3: Heimdal vulnerability

Releases

• Ubuntu 12.04

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

• libkrb5-26-heimdal - 1.6~git20120311.dfsg.1-2ubuntu0.2

After a standard system update you need to restart any applications
using Heimdal libraries to make all the necessary changes.

References

• CVE-2017-11103

Related notices

• USN-3353-4: samba, libsmbclient
• USN-3353-1: libheimntlm0-heimdal, libsl0-heimdal, libheimbase1-heimdal, heimdal-kdc, heimdal, libasn1-8-heimdal, libkadm5srv8-heimdal, libhcrypto4-heimdal, libkdc2-heimdal, heimdal-kcm, heimdal-dev, libkafs0-heimdal, heimdal-clients, libotp0-heimdal, heimdal-docs, libwind0-heimdal, libhx509-5-heimdal, libhdb9-heimdal, libkrb5-26-heimdal, libroken18-heimdal, heimdal-servers, libkadm5clnt7-heimdal, heimdal-multidev, libgssapi3-heimdal, heimdal-clients-x, heimdal-servers-x
• USN-3353-2: libwbclient0, samba, smbclient, samba-dev, libwbclient-dev, winbind, samba-doc, libpam-smbpass, samba-vfs-modules, ctdb, samba-common, libsmbsharemodes-dev, samba-libs, registry-tools, libsmbsharemodes0, libnss-winbind, libsmbclient, libpam-winbind, libsmbclient-dev, python-samba, samba-testsuite, samba-common-bin, samba-dsdb-modules, libparse-pidl-perl