ESB-2017.1848 - [Ubuntu] apache2-bin: Denial of service - Remote/unauthenticated 2017-07-28

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1848
                     Apache HTTP Server vulnerability
                               28 July 2017

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

Product:           apache2-bin
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service        -- Remote/Unauthenticated
                   Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-9788  

Reference:         ESB-2017.1770

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3370-1

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Ubuntu Security Notice USN-3370-1
July 27, 2017

apache2 vulnerability
==========================================================================

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

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

Summary:

Apache HTTP Server could be made to crash or leak sensitive information if
it received specially crafted network traffic.

Software Description:
- - apache2: Apache HTTP server

Details:

Robert Swiecki discovered that the Apache HTTP Server mod_auth_digest
module incorrectly cleared values when processing certain requests. A
remote attacker could use this issue to cause the server to crash,
resulting in a denial or service, or possibly obtain sensitive information.

Update instructions:

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

Ubuntu 17.04:
  apache2-bin                     2.4.25-3ubuntu2.2

Ubuntu 16.04 LTS:
  apache2-bin                     2.4.18-2ubuntu3.4

Ubuntu 14.04 LTS:
  apache2-bin                     2.4.7-1ubuntu4.17

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

References:
  https://www.ubuntu.com/usn/usn-3370-1
  CVE-2017-9788

Package Information:
  https://launchpad.net/ubuntu/+source/apache2/2.4.25-3ubuntu2.2
  https://launchpad.net/ubuntu/+source/apache2/2.4.18-2ubuntu3.4
  https://launchpad.net/ubuntu/+source/apache2/2.4.7-1ubuntu4.17

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