CVE Feed

    Dashboard / CVE / CVE-2016-2110

    CVE-2016-2110

    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.

    Published:Apr 12, 2016
    Last Modified:Apr 12, 2025
    EPS:Apr 25, 2016
    EPSS Score:0.16935
    CVSS Score:5.9

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Mission Critical
    Vendor
    Redhat
    Product
    Storage
    Vendor
    Samba
    Product
    Samba

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    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/msg00046.html
    http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html
    http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html
    http://lists.opensuse.org/opensuse-updates/2016-05/msg00124.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.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://bto.bluecoat.com/security-advisory/sa122
    https://h20566.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c05087821
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05082964
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05162399
    https://security.gentoo.org/glsa/201612-47
    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-2016-2110.html
    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/msg00046.html
    http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html
    http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html
    http://lists.opensuse.org/opensuse-updates/2016-05/msg00124.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.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://bto.bluecoat.com/security-advisory/sa122
    https://h20566.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c05087821
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05082964
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05162399
    https://security.gentoo.org/glsa/201612-47
    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-2016-2110.html

    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