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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.4640
                     USN-4217-2: Samba vulnerabilities
                             12 December 2019

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

Product:           Samba
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service   -- Remote/Unauthenticated
                   Unauthorised Access -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-14870 CVE-2019-14861 

Reference:         ESB-2019.4604

Original Bulletin: 
   https://usn.ubuntu.com/4217-2/

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USN-4217-2: Samba vulnerabilities
11 December 2019

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

  o Ubuntu 14.04 ESM

Summary

Several security issues were fixed in Samba.

Software Description

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

Details

USN-4217-1 fixed several vulnerabilities in Samba. This update provides the
corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Andreas Oster discovered that the Samba DNS management server incorrectly
handled certain records. An authenticated attacker could possibly use this
issue to crash Samba, resulting in a denial of service. (CVE-2019-14861)

Isaac Boukris discovered that Samba did not enforce the Kerberos
DelegationNotAllowed feature restriction, contrary to expectations.
(CVE-2019-14870)

Update instructions

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

Ubuntu 14.04 ESM
    libsmbclient - 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4
    samba - 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4

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-4217-1
  o CVE-2019-14861
  o CVE-2019-14870

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