CVE-2018-1000115 Information

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 1:50000 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.

CVSS Vector

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

Reference

https://access.redhat.com/errata/RHBA-2018:2140 https://access.redhat.com/errata/RHSA-2018:1593 https://access.redhat.com/errata/RHSA-2018:1627 https://access.redhat.com/errata/RHSA-2018:2331 https://access.redhat.com/errata/RHSA-2018:2857 https://blogs.akamai.com/2018/03/memcached-fueled-13-tbps-attacks.html https://github.com/memcached/memcached/commit/dbb7a8af90054bf4ef51f5814ef7ceb17d83d974 https://github.com/memcached/memcached/issues/348 https://github.com/memcached/memcached/wiki/ReleaseNotes156 https://twitter.com/dormando/status/968579781729009664 https://usn.ubuntu.com/3588-1/ https://www.debian.org/security/2018/dsa-4218 https://www.exploit-db.com/exploits/44264/ https://www.exploit-db.com/exploits/44265/ https://www.synology.com/support/security/Synology_SA_18_07

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5