-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

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

                               ESB-2019.1707
                       USN-3976: Samba vulnerability
                                15 May 2019

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

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

Product:           samba
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Provide Misleading Information -- Existing Account
                   Access Confidential Data       -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-16860  

Reference:         ESB-2019.1702

Original Bulletin: 
   https://usn.ubuntu.com/3976-1/
   https://usn.ubuntu.com/3976-2/

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

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-3976-1: Samba vulnerability
14 May 2019

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

  o Ubuntu 19.04
  o Ubuntu 18.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Summary

Samba could allow unintended access to network services.

Software Description

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

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.

Update instructions

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

Ubuntu 19.04
    samba - 2:4.10.0+dfsg-0ubuntu2.1
Ubuntu 18.10
    samba - 2:4.8.4+dfsg-2ubuntu2.4
Ubuntu 18.04 LTS
    samba - 2:4.7.6+dfsg~ubuntu-0ubuntu2.10
Ubuntu 16.04 LTS
    samba - 2:4.3.11+dfsg-0ubuntu0.16.04.20

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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

References

  o CVE-2018-16860

- -----------------------------------------------------------------------------

USN-3976-2: Samba vulnerability
14 May 2019

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

  o Ubuntu 14.04 ESM
  o Ubuntu 12.04 ESM

Summary

Samba could allow unintended access to network services.

Software Description

  o 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.

Update instructions

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

Ubuntu 14.04 ESM
    samba - 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm1
Ubuntu 12.04 ESM
    samba - 2:3.6.25-0ubuntu0.12.04.18

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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

References

  o USN-3976-1
  o CVE-2018-16860

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=TAtE
-----END PGP SIGNATURE-----