UBUNTU-CVE-2015-5296

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    UBUNTU-CVE-2015-5296

    Published: 16 Dec 2015Last Modified: 22 Apr 2026
    Upstream:
    CVE-2015-5296
    Aliases:
    USN-2855-1

    Summary:

    Details: Samba 3.x and 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3 supports connections that are encrypted but unsigned, which allows man-in-the-middle attackers to conduct encrypted-to-unencrypted downgrade attacks by modifying the client-server data stream, related to clidfs.c, libsmb_server.c, and smbXcli_base.c.

    References: https://ubuntu.com/security/CVE-2015-5296, https://www.samba.org/samba/security/CVE-2015-5296.html, https://ubuntu.com/security/notices/USN-2855-1, https://www.cve.org/CVERecord?id=CVE-2015-5296

    Affected packages

    Package

    Name: samba

    Purl: pkg:deb/ubuntu/samba@2:4.1.6+dfsg-1ubuntu2.14.04.11?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2:4.1.6+dfsg-1ubuntu2.14.04.11

    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-2015-5296 | CVE-DB