CVE-2018-1000115

Name: CVE-2018-1000115
Creator: NVD / NIST
Published: 2018-03-05T14:29:00.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 88.64%

Last modified Jun 17, 2026

CVE-2018-1000115 is a vulnerability of currently unknown severity. 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. EPSS estimates a 88.64% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

88.64%

99.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Memcached	Memcached	1.5.5
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Redhat	Openstack	8
Redhat	Openstack	9
Redhat	Openstack	10
Redhat	Openstack	11
Redhat	Openstack	12

References

https://access.redhat.com/errata/RHBA-2018:2140Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1593Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1627Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2331Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2857Third Party Advisory
https://blogs.akamai.com/2018/03/memcached-fueled-13-tbps-attacks.htmlThird Party Advisory
https://github.com/memcached/memcached/commit/dbb7a8af90054bf4ef51f5814ef7ceb17d83d974Patch, Third Party Advisory
https://github.com/memcached/memcached/issues/348Issue Tracking, Third Party Advisory
https://github.com/memcached/memcached/wiki/ReleaseNotes156Third Party Advisory
https://twitter.com/dormando/status/968579781729009664Third Party Advisory
https://usn.ubuntu.com/3588-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4218Third Party Advisory
https://www.exploit-db.com/exploits/44264/Exploit, Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/44265/Exploit, Third Party Advisory, VDB Entry
https://www.synology.com/support/security/Synology_SA_18_07Third Party Advisory
https://access.redhat.com/errata/RHBA-2018:2140Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1593Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1627Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2331Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2857Third Party Advisory
https://blogs.akamai.com/2018/03/memcached-fueled-13-tbps-attacks.htmlThird Party Advisory
https://github.com/memcached/memcached/commit/dbb7a8af90054bf4ef51f5814ef7ceb17d83d974Patch, Third Party Advisory
https://github.com/memcached/memcached/issues/348Issue Tracking, Third Party Advisory
https://github.com/memcached/memcached/wiki/ReleaseNotes156Third Party Advisory
https://twitter.com/dormando/status/968579781729009664Third Party Advisory
https://usn.ubuntu.com/3588-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4218Third Party Advisory
https://www.exploit-db.com/exploits/44264/Exploit, Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/44265/Exploit, Third Party Advisory, VDB Entry
https://www.synology.com/support/security/Synology_SA_18_07Third Party Advisory

Timeline

Published: Mar 5, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1000115?

How severe is CVE-2018-1000115?

Severity scoring for CVE-2018-1000115 is pending analysis. The EPSS model estimates a 88.64% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1000115?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-1000115?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST