UBUNTU-CVE-2016-2119

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    UBUNTU-CVE-2016-2119

    Published: 7 Jul 2016Last Modified: 22 Apr 2026
    Upstream:
    CVE-2016-2119
    Aliases:
    USN-3092-1

    Summary:

    Details: libcli/smb/smbXcli_base.c in Samba 4.x before 4.2.14, 4.3.x before 4.3.11, and 4.4.x before 4.4.5 allows man-in-the-middle attackers to bypass a client-signing protection mechanism, and consequently spoof SMB2 and SMB3 servers, via the (1) SMB2_SESSION_FLAG_IS_GUEST or (2) SMB2_SESSION_FLAG_IS_NULL flag.

    References: https://ubuntu.com/security/CVE-2016-2119, https://www.samba.org/samba/security/CVE-2016-2119.html, https://ubuntu.com/security/notices/USN-3092-1, https://www.cve.org/CVERecord?id=CVE-2016-2119

    Affected packages

    Package

    Name: samba

    Purl: pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.14.04.1?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2:4.3.11+dfsg-0ubuntu0.14.04.1

    Affected versions

    2:3.6.18-1ubuntu3

    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
    UBUNTU-CVE-2016-2119 | CVE-DB