ESB-2017.2721 - [Linux][Ubuntu] systemd: Denial of service - Remote with user interaction 2017-10-27

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2721
                           systemd vulnerability
                              27 October 2017

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

Product:           systemd
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-15908  

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3466-1

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running systemd check for an updated version of the software for 
         their operating system.

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Ubuntu Security Notice USN-3466-1
October 26, 2017

systemd vulnerability
==========================================================================

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

- - Ubuntu 17.10
- - Ubuntu 17.04

Summary:

systemd could be made to temporarily stop responding if it received
specially crafted network traffic.

Software Description:
- - systemd: system and service manager

Details:

Karim Hossen & Thomas Imbert discovered that systemd-resolved incorrectly
handled certain DNS responses. A remote attacker could possibly use this
issue to cause systemd to temporarily stop responding, resulting in a
denial of service.

Update instructions:

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

Ubuntu 17.10:
  systemd                         234-2ubuntu12.1

Ubuntu 17.04:
  systemd                         232-21ubuntu7.1

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

References:
  https://www.ubuntu.com/usn/usn-3466-1
  CVE-2017-15908

Package Information:
  https://launchpad.net/ubuntu/+source/systemd/234-2ubuntu12.1
  https://launchpad.net/ubuntu/+source/systemd/232-21ubuntu7.1

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