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==========================================================================
Ubuntu Security Notice USN-4000-1
May 30, 2019

corosync vulnerability
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Corosync could be made to crash or execute arbitrary code if it
received a specially crafted request.

Software Description:
- corosync: cluster engine daemon and utilities

Details:

It was discovered that Corosync incorrectly handled certain requests.
An attacker could possibly use this issue to cause a denial of service
or execute arbitrary code.

Update instructions:

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

Ubuntu 18.04 LTS:
  corosync                        2.4.3-0ubuntu1.1
  libtotem-pg5                    2.4.3-0ubuntu1.1

Ubuntu 16.04 LTS:
  corosync                        2.3.5-3ubuntu2.3
  libtotem-pg5                    2.3.5-3ubuntu2.3

After a standard system update you need to restart Corosync to make
all the necessary changes.

References:
  https://usn.ubuntu.com/usn/usn-4000-1
  CVE-2018-1084

Package Information:
  https://launchpad.net/ubuntu/+source/corosync/2.4.3-0ubuntu1.1
  https://launchpad.net/ubuntu/+source/corosync/2.3.5-3ubuntu2.3
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