UBUNTU-CVE-2017-9951

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    UBUNTU-CVE-2017-9951

    Published: 17 Jul 2017Last Modified: 4 Feb 2026
    Upstream:
    CVE-2017-9951
    Aliases:
    USN-3588-1

    Summary:

    Details: The try_read_command function in memcached.c in memcached before 1.4.39 allows remote attackers to cause a denial of service (segmentation fault) via a request to add/set a key, which makes a comparison between signed and unsigned int and triggers a heap-based buffer over-read. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-8705.

    References: https://ubuntu.com/security/CVE-2017-9951, https://www.twistlock.com/2017/07/13/cve-2017-9951-heap-overflow-memcached-server-1-4-38-twistlock-vulnerability-report/, https://github.com/memcached/memcached/wiki/ReleaseNotes1439, https://groups.google.com/forum/message/raw?msg=memcached/ubGWrkmrr4E/nrm1SeVJAQAJ, https://ubuntu.com/security/notices/USN-3588-1, https://www.cve.org/CVERecord?id=CVE-2017-9951

    Affected packages

    Package

    Name: memcached

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.4.14-0ubuntu9.2

    Affected versions

    1.4.14-0ubuntu4
    1.4.14-0ubuntu8
    1.4.14-0ubuntu9
    1.4.14-0ubuntu9.1

    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