CVE-2016-2118

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    CVE-2016-2118

    Published: 12 Apr 2016Last Modified: 8 Jul 2026

    Summary:

    Details: The MS-SAMR and MS-LSAD protocol implementations in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 mishandle DCERPC connections, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data stream, aka "BADLOCK."

    References: http://badlock.org/, http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182185.html, http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182272.html, http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182288.html, http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00020.html, http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00021.html, http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00022.html, http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00023.html, http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00024.html, http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html, http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html, http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html, http://rhn.redhat.com/errata/RHSA-2016-0611.html, http://rhn.redhat.com/errata/RHSA-2016-0612.html, http://rhn.redhat.com/errata/RHSA-2016-0613.html, http://rhn.redhat.com/errata/RHSA-2016-0614.html, http://rhn.redhat.com/errata/RHSA-2016-0618.html, http://rhn.redhat.com/errata/RHSA-2016-0619.html, http://rhn.redhat.com/errata/RHSA-2016-0620.html, http://rhn.redhat.com/errata/RHSA-2016-0621.html, http://rhn.redhat.com/errata/RHSA-2016-0623.html, http://rhn.redhat.com/errata/RHSA-2016-0624.html, http://rhn.redhat.com/errata/RHSA-2016-0625.html, http://www.debian.org/security/2016/dsa-3548, http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html, http://www.securityfocus.com/bid/86002, http://www.securitytracker.com/id/1035533, http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.458012, http://www.ubuntu.com/usn/USN-2950-1, http://www.ubuntu.com/usn/USN-2950-2, http://www.ubuntu.com/usn/USN-2950-3, http://www.ubuntu.com/usn/USN-2950-4, http://www.ubuntu.com/usn/USN-2950-5, https://access.redhat.com/security/vulnerabilities/badlock, https://bto.bluecoat.com/security-advisory/sa122, https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05162399, https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05166182, https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes, https://kb.netapp.com/support/s/article/ka51A0000008SXzQAM/smb-vulnerabilities-in-multiple-netapp-products, https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40196, https://security.gentoo.org/glsa/201612-47, https://www.kb.cert.org/vuls/id/813296, https://www.samba.org/samba/history/samba-4.2.10.html, https://www.samba.org/samba/latest_news.html#4.4.2, https://www.samba.org/samba/security/CVE-2016-2118.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- b1d9ddf738c6e59e489bc9c339ce6de5988b689e
    Fixed -343f384dd39bf05867461fde4c79167604d99f98

    Affected versions

    samba-4.3.6
    samba-4.3.5
    samba-4.3.4
    samba-4.3.2
    samba-4.3.1
    samba-4.3.0

    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
    CVE-2016-2118 | CVE-DB