CVE-2015-5296

    Dashboard / Vulnerabilities / CVE-2015-5296

    CVE-2015-5296

    Published: 29 Dec 2015Last Modified: 16 Apr 2026

    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: http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174076.html, http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174391.html, http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00019.html, http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00020.html, http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00032.html, http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00033.html, http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00002.html, http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00017.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://www.debian.org/security/2016/dsa-3433, http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html, http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html, http://www.securityfocus.com/bid/79732, http://www.securitytracker.com/id/1034493, http://www.ubuntu.com/usn/USN-2855-1, http://www.ubuntu.com/usn/USN-2855-2, https://bugzilla.redhat.com/show_bug.cgi?id=1290292, https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993, https://security.gentoo.org/glsa/201612-47, https://www.samba.org/samba/security/CVE-2015-5296.html, http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174076.html, http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174391.html, http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00019.html, http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00020.html, http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00032.html, http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00033.html, http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00002.html, http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00017.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, https://bugzilla.redhat.com/show_bug.cgi?id=1290292, https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=1ba49b8f389eda3414b14410c7fbcb4041ca06b1, https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=a819d2b440aafa3138d95ff6e8b824da885a70e9, https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=d724f835acb9f4886c0001af32cd325dbbf1f895

    Affected packages

    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-2015-5296 | CVE-DB