USN-3976-2: Samba vulnerability

14 May 2019

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-3976-1 fixed a vulnerability in Samba. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Isaac Boukris and Andrew Bartlett discovered that Samba incorrectly checked
S4U2Self packets. In certain environments, a remote attacker could possibly
use this issue to escalate privileges.

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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.

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Update instructions

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

Ubuntu 14.04
Ubuntu 12.04

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

References

Related notices

  • USN-3976-1: libparse-pidl-perl, ctdb, libpam-winbind, samba, samba-common-bin, samba-dev, smbclient, registry-tools, libsmbclient, python3-samba, winbind, python-samba, libnss-winbind, samba-dsdb-modules, libwbclient-dev, samba-libs, samba-common, samba-testsuite, libwbclient0, samba-vfs-modules, libsmbclient-dev
  • USN-5675-1: heimdal-clients, heimdal-kcm, heimdal-docs, heimdal-servers-x, heimdal-servers, libkafs0-heimdal, libhcrypto4-heimdal, libroken18-heimdal, libhdb9-heimdal, libkadm5srv8-heimdal, heimdal, libasn1-8-heimdal, libotp0-heimdal, libkrb5-26-heimdal, libgssapi3-heimdal, heimdal-kdc, heimdal-multidev, heimdal-clients-x, libheimbase1-heimdal, libkadm5clnt7-heimdal, libsl0-heimdal, heimdal-dev, libwind0-heimdal, libheimntlm0-heimdal, libhx509-5-heimdal, libkdc2-heimdal