ESB-2017.2983 - [Linux][Ubuntu] samba: Multiple vulnerabilities 2017-11-22

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

                               ESB-2017.2983
                           Samba vulnerabilities
                             22 November 2017

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

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

Product:           samba
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Access Confidential Data        -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-15275 CVE-2017-14746 

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3486-1
   http://www.ubuntu.com/usn/usn-3486-2

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running samba check for an updated version of the software for their
         operating system.
         
         This bulletin contains two (2) Ubuntu security advisories.

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==========================================================================
Ubuntu Security Notice USN-3486-1
November 21, 2017

samba vulnerabilities
==========================================================================

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

- - Ubuntu 17.10
- - Ubuntu 17.04
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Samba.

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

Details:

Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory
when processing certain SMB1 requests. A remote attacker could possibly use
this issue to execute arbitrary code. (CVE-2017-14746)

Volker Lendecke discovered that Samba incorrectly cleared memory when
returning data to a client. A remote attacker could possibly use this issue
to obtain sensitive information. (CVE-2017-15275)

Update instructions:

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

Ubuntu 17.10:
  samba                           2:4.6.7+dfsg-1ubuntu3.1

Ubuntu 17.04:
  samba                           2:4.5.8+dfsg-0ubuntu0.17.04.8

Ubuntu 16.04 LTS:
  samba                           2:4.3.11+dfsg-0ubuntu0.16.04.12

Ubuntu 14.04 LTS:
  samba                           2:4.3.11+dfsg-0ubuntu0.14.04.13

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

References:
  https://www.ubuntu.com/usn/usn-3486-1
  CVE-2017-14746, CVE-2017-15275

Package Information:
  https://launchpad.net/ubuntu/+source/samba/2:4.6.7+dfsg-1ubuntu3.1
  https://launchpad.net/ubuntu/+source/samba/2:4.5.8+dfsg-0ubuntu0.17.04.8
  https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.12
  https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.13


==========================================================================
Ubuntu Security Notice USN-3486-2
November 21, 2017

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

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

- - Ubuntu 12.04 ESM

Summary:

Samba could be made to expose sensitive information over the
network.

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

Details:

USN-3486-1 fixed a vulnerability in Samba. This update provides the
corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 Volker Lendecke discovered that Samba incorrectly cleared memory when
 returning data to a client. A remote attacker could possibly use this
 issue to obtain sensitive information. (CVE-2017-15275)

Update instructions:

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

Ubuntu 12.04 ESM:
  samba                            2:3.6.25-0ubuntu0.12.04.14

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

References:
  https://www.ubuntu.com/usn/usn-3486-2
  https://www.ubuntu.com/usn/usn-3486-1
  CVE-2017-15275

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