USN-3353-2: Samba vulnerability

14 July 2017

Samba could allow unintended access to network services.

Releases

Packages

  • samba - SMB/CIFS file, print, and login server for Unix

Details

USN-3353-1 fixed a vulnerability in Heimdal. This update provides
the corresponding update for Samba.

Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
that Samba clients incorrectly trusted unauthenticated portions of
Kerberos tickets. A remote attacker could use this to impersonate
trusted network servers 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

In general, a standard system update will make all the necessary changes.

References

Related notices

  • USN-3353-1: libkadm5clnt7-heimdal, libheimbase1-heimdal, heimdal-kdc, libasn1-8-heimdal, heimdal-servers-x, libkrb5-26-heimdal, libkdc2-heimdal, libhcrypto4-heimdal, libotp0-heimdal, libwind0-heimdal, libheimntlm0-heimdal, libhdb9-heimdal, heimdal-multidev, libhx509-5-heimdal, heimdal-kcm, libgssapi3-heimdal, heimdal-servers, libsl0-heimdal, libkadm5srv8-heimdal, libroken18-heimdal, libkafs0-heimdal, heimdal-clients, heimdal-clients-x, heimdal-docs, heimdal-dev, heimdal
  • USN-3353-3: libkrb5-26-heimdal, heimdal
  • USN-3353-4: libsmbclient, samba