ESB-2019.1178 - [Ubuntu] samba: Multiple vulnerabilities 2019-04-09

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1178
                            Samba vulnerability
                               9 April 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           samba
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Create Arbitrary Files   -- Existing Account
                   Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-3880  

Reference:         ESB-2019.1176

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3939-1
   http://www.ubuntu.com/usn/usn-3939-2

Comment: This bulletin contains two (2) Ubuntu security advisories.

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==========================================================================
Ubuntu Security Notice USN-3939-1
April 08, 2019

samba vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- - Ubuntu 18.10
- - Ubuntu 18.04 LTS
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

Samba could be made to create files in unexpected locations.

Software Description:
- - samba: SMB/CIFS file, print, and login server for Unix

Details:

Michael Hanselmann discovered that Samba incorrectly handled registry
files. A remote attacker could possibly use this issue to create new
registry files outside of the share, contrary to expectations.

Update instructions:

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

Ubuntu 18.10:
  libsmbclient                    2:4.8.4+dfsg-2ubuntu2.3
  samba                           2:4.8.4+dfsg-2ubuntu2.3

Ubuntu 18.04 LTS:
  libsmbclient                    2:4.7.6+dfsg~ubuntu-0ubuntu2.9
  samba                           2:4.7.6+dfsg~ubuntu-0ubuntu2.9

Ubuntu 16.04 LTS:
  libsmbclient                    2:4.3.11+dfsg-0ubuntu0.16.04.19
  samba                           2:4.3.11+dfsg-0ubuntu0.16.04.19

Ubuntu 14.04 LTS:
  libsmbclient                    2:4.3.11+dfsg-0ubuntu0.14.04.20
  samba                           2:4.3.11+dfsg-0ubuntu0.14.04.20

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

References:
  https://usn.ubuntu.com/usn/usn-3939-1
  CVE-2019-3880

Package Information:
  https://launchpad.net/ubuntu/+source/samba/2:4.8.4+dfsg-2ubuntu2.3
  https://launchpad.net/ubuntu/+source/samba/2:4.7.6+dfsg~ubuntu-0ubuntu2.9
  https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.19
  https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.20


==============================================================================

==========================================================================
Ubuntu Security Notice USN-3939-2
April 08, 2019

samba vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- - Ubuntu 12.04 ESM

Summary:

Samba could be made to create files in unexpected locations.

Software Description:
- - samba: SMB/CIFS file, print, and login server for Unix

Details:

USN-3939-1 fixed a vulnerability in Samba. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

  Michael Hanselmann discovered that Samba incorrectly handled registry
  files. A remote attacker could possibly use this issue to create new
  registry files outside of the share, contrary to expectations.

Update instructions:

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

Ubuntu 12.04 ESM:
   libsmbclient                                        2:3.6.25-0ubuntu0.12.04.17
   samba                                               2:3.6.25-0ubuntu0.12.04.17

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

References:
   https://usn.ubuntu.com/usn/usn-3939-2
   https://usn.ubuntu.com/usn/usn-3939-1
   CVE-2019-3880

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