USN-3588-1: Memcached vulnerabilities

Ubuntu Security Notice USN-3588-1

5th March, 2018

memcached vulnerabilities

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

Ubuntu 17.10
Ubuntu 16.04 LTS
Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Memcached.

Software description

memcached
– high-performance memory object caching system

Details

Daniel Shapira discovered an integer overflow issue in Memcached. A remote
attacker could use this to cause a denial of service (daemon crash).
(CVE-2017-9951)

It was discovered that Memcached listened to UDP by default. A remote
attacker could use this as part of a distributed denial of service attack.
(CVE-2018-1000115)

Update instructions

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

Ubuntu 17.10:: memcached

1.4.33-1ubuntu3.2
Ubuntu 16.04 LTS:: memcached

1.4.25-2ubuntu1.3
Ubuntu 14.04 LTS:: memcached

1.4.14-0ubuntu9.2

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

Please note that after applying this update, Memcached will no longer
listen to UDP by default. If UDP service is desired, please add
'-U 11211' to /etc/memcached.conf and restart the memcached service.