==========================================================================
Ubuntu Security Notice USN-3963-1
May 01, 2019

memcached vulnerability
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS

Summary:

Memcached could be made to crash if it received specially crafted network
traffic.

Software Description:
- memcached: high-performance memory object caching system

Details:

It was discovered that Memcached incorrectly handled certain lru command
messages. A remote attacker could possibly use this issue to cause
Memcached to crash, resulting in a denial of service.

Update instructions:

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

Ubuntu 19.04:
  memcached                       1.5.10-0ubuntu1.19.04.1

Ubuntu 18.10:
  memcached                       1.5.10-0ubuntu1.18.10.1

Ubuntu 18.04 LTS:
  memcached                       1.5.6-0ubuntu1.1

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

References:
  https://usn.ubuntu.com/usn/usn-3963-1
  CVE-2019-11596

Package Information:
  https://launchpad.net/ubuntu/+source/memcached/1.5.10-0ubuntu1.19.04.1
  https://launchpad.net/ubuntu/+source/memcached/1.5.10-0ubuntu1.18.10.1
  https://launchpad.net/ubuntu/+source/memcached/1.5.6-0ubuntu1.1