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USN-3353-4: Samba vulnerability

24 July 2017

Samba could allow unintended access to network services.

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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.

Original advisory details:

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 services or perform other attacks.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04

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

References

Related notices

  • USN-3353-1: heimdal-docs, heimdal-dev, heimdal-clients-x, libheimntlm0-heimdal, libkadm5srv8-heimdal, libroken18-heimdal, libhx509-5-heimdal, heimdal-clients, libheimbase1-heimdal, libkrb5-26-heimdal, libgssapi3-heimdal, heimdal-servers, heimdal, heimdal-kdc, libhdb9-heimdal, heimdal-multidev, libkdc2-heimdal, libasn1-8-heimdal, heimdal-servers-x, heimdal-kcm, libotp0-heimdal, libwind0-heimdal, libhcrypto4-heimdal, libkadm5clnt7-heimdal, libkafs0-heimdal, libsl0-heimdal
  • USN-3353-3: heimdal, libkrb5-26-heimdal
  • USN-3353-2: libsmbclient-dev, samba-libs, libwbclient0, samba-vfs-modules, libparse-pidl-perl, samba, libwbclient-dev, samba-common, python-samba, samba-dev, libpam-smbpass, ctdb, libsmbsharemodes0, samba-doc, winbind, libpam-winbind, libnss-winbind, samba-dsdb-modules, registry-tools, samba-common-bin, libsmbclient, samba-testsuite, libsmbsharemodes-dev, smbclient