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TI-2018-15768 Aliases CVE-2018-1000115GHSA-f4xm-w85j-gc55

Memcached version 1.5.5 contains an Insufficient Control of Network Message Volume…

Priority HIGH 75CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 5 fixed, 7 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-400.

Summary

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.

Why it matters now

EPSS 0.88002 99th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix Partial Red Hat: 4 advisoriesRed Hat: 5 fixed, 7 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 11

CPEVersionsRoleVendor
cpe:2.3:a:memcached:memcached:1.5.5:*:*:*:*:*:*:*1.5.5VulnerableMemcached
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*17.10VulnerableCanonical
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*8VulnerableRed Hat
cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:*9VulnerableRed Hat
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*10VulnerableRed Hat
cpe:2.3:a:redhat:openstack:11:*:*:*:*:*:*:*11VulnerableRed Hat
  • cpe:2.3:a:memcached:memcached:1.5.5:*:*:*:*:*:*:* Versions 1.5.5 Vulnerable ·Memcached
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:* Versions 8 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:* Versions 9 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* Versions 10 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openstack:11:*:*:*:*:*:*:* Versions 11 Vulnerable ·Red Hat
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:redhat:openstack:12:*:*:*:*:*:*:*12VulnerableRed Hat
  • cpe:2.3:a:redhat:openstack:12:*:*:*:*:*:*:* Versions 12 Vulnerable ·Red Hat

Remediation

Red Hat 4 advisories

  • RHSA-2018:2857 Released 2018-10-02 · Red Hat rating Moderate
    Red Hat OpenStack Platform 8 director security and bug fix update
    • OpenStack 8.0 Director for RHEL 7 instack-undercloud-2.2.7-13.el7ost, openstack-tripleo-heat-templates-0.8.14-42.el7ost, openstack-tripleo-heat-templates-kilo-0.8.14-42.el7ost
  • RHSA-2018:2331 Released 2018-08-20 · Red Hat rating Moderate
    Red Hat OpenStack Platform 12.0 director security and bug fix update
    • Red Hat OpenStack Platform 12.0 instack-undercloud-7.4.12-1.el7ost, openstack-tripleo-common-7.6.13-3.el7ost, openstack-tripleo-common-container-base-7.6.13-3.el7ost +24
  • RHSA-2018:1627 Released 2018-05-18 · Red Hat rating Moderate
    Red Hat OpenStack Platform director security update
    • Red Hat OpenStack Platform 11.0 openstack-tripleo-heat-templates-6.2.12-2.el7ost, puppet-tripleo-6.5.10-3.el7ost
Show 1 more Red Hat advisories
  • RHSA-2018:1593 Released 2018-05-17 · Red Hat rating Moderate
    Red Hat OpenStack Platform director security update
    • Red Hat OpenStack Platform 10.0 openstack-tripleo-heat-templates-5.3.10-1.el7ost, puppet-tripleo-5.6.8-6.el7ost

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)AffectedNo fix planned: Will not fix
Red Hat Mobile Application Platform 4AffectedNo fix planned: Will not fix
Red Hat OpenStack Platform 13 (Queens)AffectedNo fix yet
Red Hat OpenStack Platform 8 (Liberty)AffectedNo fix yet
Red Hat OpenStack Platform 9 (Mitaka)AffectedNo fix yet
OpenStack 8.0 Director for RHEL 7Fixed RHSA-2018:2857
OpenStack 9.0 Director for RHEL 7Fixed—
Red Hat OpenStack Platform 10.0Fixed RHSA-2018:1593
Red Hat OpenStack Platform 11.0Fixed RHSA-2018:1627
Red Hat OpenStack Platform 12.0Fixed RHSA-2018:2331
Not affected: 1 product
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-1000115
  2. 2026-10-03 Alias added: GHSA-f4xm-w85j-gc55

References

Exploit 2

Patch 1

Advisory 12

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences