CVE-2018-1000115

mediumpriority · attend · 71EPSS 0.881 · 100 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · functional

Likely / severe?

88.1% (100th) EPSS

CVSS 5 · medium

Is it mine?

16 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-26

Memcached version 1.5.5 contains an Insufficient Control of Network Message Volume (Network Amplification, CWE-406) vulnerability in the UDP support of the memcached server that can result in denial of service via network flood (traffic amplification of 1:50,000 has been reported by reliable sources). This attack appear to be exploitable via network connectivity to port 11211 UDP. This vulnerability appears to have been fixed in 1.5.6 due to the disabling of the UDP protocol by default.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedopenstack-tripleo-heat-templates-0:5.3.10-1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2018:1593
Fixedopenstack-tripleo-heat-templates-0:5.3.10-1.el7ost.src as a component of Red Hat OpenStack Platform 10.0redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2018:1593
Fixedpuppet-tripleo-0:5.6.8-6.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2018:1593
Fixedpuppet-tripleo-0:5.6.8-6.el7ost.src as a component of Red Hat OpenStack Platform 10.0redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2018:1593
Workaroundopenstack-tripleo-heat-templates-0:5.3.10-1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0redhat_csaf
Please refer to the Red Hat Knowledgebase article 3369081 for instructions on how to properly secure memcached installations to prevent them from being used in an attack. https://access.redhat.com/solutions/3369081
Workaroundopenstack-tripleo-heat-templates-0:5.3.10-1.el7ost.src as a component of Red Hat OpenStack Platform 10.0redhat_csaf
Please refer to the Red Hat Knowledgebase article 3369081 for instructions on how to properly secure memcached installations to prevent them from being used in an attack. https://access.redhat.com/solutions/3369081
Workaroundpuppet-tripleo-0:5.6.8-6.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0redhat_csaf
Please refer to the Red Hat Knowledgebase article 3369081 for instructions on how to properly secure memcached installations to prevent them from being used in an attack. https://access.redhat.com/solutions/3369081
Workaroundpuppet-tripleo-0:5.6.8-6.el7ost.src as a component of Red Hat OpenStack Platform 10.0redhat_csaf
Please refer to the Red Hat Knowledgebase article 3369081 for instructions on how to properly secure memcached installations to prevent them from being used in an attack. https://access.redhat.com/solutions/3369081

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USprimary

exploits (3)

Public proof-of-concept and weaponised exploit code.

auxiliary/scanner/memcached/memcached_ampMemcached Stats Amplification Scannerfunctional · metasploit
EDB-44264Memcached 1.5.5 - 'Memcrashed' Insufficient Control Network Message Volume Denial of Service (1)PoC · exploit_db
EDB-44265Memcached 1.5.5 - 'Memcrashed ' Insufficient Control of Network Message Volume Denial of Service With Shodan APIPoC · exploit_db

affected products (16)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
canonical ubuntu linux= 14.04nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
canonical ubuntu linux= 16.04nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
canonical ubuntu linux= 17.10nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
debian debian linux= 8.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
memcached memcached= 1.5.5nvdUScpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:*
redhat openstack= 10nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat openstack= 11nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat openstack= 12nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat openstack= 8nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat openstack= 9nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
openstack-tripleo-heat-templates-0:5.3.10-1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0all versionsfixedredhat_csafUS
openstack-tripleo-heat-templates-0:5.3.10-1.el7ost.src as a component of Red Hat OpenStack Platform 10.0all versionsfixedredhat_csafUS
puppet-tripleo-0:5.6.8-6.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0all versionsfixedredhat_csafUS
puppet-tripleo-0:5.6.8-6.el7ost.src as a component of Red Hat OpenStack Platform 10.0all versionsfixedredhat_csafUS

advisories (1)

Vendor and ecosystem advisories describing this.

RHSA-2018:1593Red Hat Security Advisory: Red Hat OpenStack Platform director security update2018-05-17csaf · redhat_csafUS
An update is now available for Red Hat OpenStack Platform 10.0 (Newton). Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd redhat_csaf NVD CVE.org MITRE

published 2018-03-05modified 2026-06-17

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references (45)

External citations — patches, advisories, analysis.

scry

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