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    CVE-2018-1000115

    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.

    Published:Mar 2, 2018
    Last Modified:Nov 21, 2024
    EPS:Mar 5, 2018
    EPSS Score:0.79854
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Memcached
    Product
    Memcached
    Vendor
    Redhat
    Product
    Openstack
    Vendor
    Redhat
    Product
    Openstack-director

    Exploits

    https://www.exploit-db.com/exploits/44264/https://www.exploit-db.com/exploits/44265/https://www.exploit-db.com/exploits/44264/https://www.exploit-db.com/exploits/44265/https://www.exploit-db.com/exploits/44265https://www.exploit-db.com/exploits/44264

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High