USN-4125-1: Memcached vulnerability

9 September 2019

memcached vulnerability

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

  • Ubuntu 19.04
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


Memcached could be made to expose sensitive information if it received a specially crafted UNIX socket.

Software Description

  • memcached - high-performance memory object caching system


It was discovered that Memcached incorrectly handled certain UNIX sockets. An attacker could possibly use this issue to access sensitive information.

Update instructions

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

Ubuntu 19.04
memcached - 1.5.10-0ubuntu1.19.04.2
Ubuntu 18.04 LTS
memcached - 1.5.6-0ubuntu1.2
Ubuntu 16.04 LTS
memcached - 1.4.25-2ubuntu1.5

To update your system, please follow these instructions:

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