UBUNTU-CVE-2016-2110

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    UBUNTU-CVE-2016-2110

    Published: 12 Apr 2016Last Modified: 22 Apr 2026
    Upstream:
    CVE-2016-2110
    Aliases:
    USN-2950-1

    Summary:

    Details: The NTLMSSP authentication implementation 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 allows man-in-the-middle attackers to perform protocol-downgrade attacks by modifying the client-server data stream to remove application-layer flags or encryption settings, as demonstrated by clearing the NTLMSSP_NEGOTIATE_SEAL or NTLMSSP_NEGOTIATE_SIGN option to disrupt LDAP security.

    References: https://ubuntu.com/security/CVE-2016-2110, https://www.samba.org/samba/security/CVE-2016-2110.html, https://ubuntu.com/security/notices/USN-2950-1, https://www.cve.org/CVERecord?id=CVE-2016-2110

    Affected packages

    Package

    Name: samba

    Purl: pkg:deb/ubuntu/samba@2:4.3.8+dfsg-0ubuntu0.14.04.2?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2:4.3.8+dfsg-0ubuntu0.14.04.2

    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-2016-2110 | CVE-DB