Amazon Linux 2 : memcached (ALAS-2018-964)

Medium Nessus Plugin ID 109132


The remote Amazon Linux 2 host is missing a security update.


It was discovered that the memcached daemon listened on UDP port 11211 by default. An attacker could use memcached for UDP amplification denial-of-service attacks. The UDP port has been disabled by default, but can still be enabled.

It was discovered that the memcached connections using UDP transport protocol can be abused for efficient traffic amplification distributed denial of service (DDoS) attacks. A remote attacker could send a malicious UDP request using a spoofed source IP address of a target system to memcached, causing it to send a significantly larger response to the target. (CVE-2018-1000115)


Run 'yum update memcached' to update your system.

See Also

Plugin Details

Severity: Medium

ID: 109132

File Name: al2_ALAS-2018-964.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2018/04/18

Modified: 2018/08/31

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:memcached, p-cpe:/a:amazon:linux:memcached-debuginfo, p-cpe:/a:amazon:linux:memcached-devel, cpe:/o:amazon:linux:2

Patch Publication Date: 2018/03/08

Reference Information

CVE: CVE-2018-1000115

ALAS: 2018-964