USN-3370-1: Apache HTTP Server vulnerability

Ubuntu Security Notice USN-3370-1

27th July, 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


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


Robert Święcki 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 version:

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

To update your system, please follow these instructions:

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