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    CVE-2016-2126

    Samba version 4.0.0 up to 4.5.2 is vulnerable to privilege elevation due to incorrect handling of the PAC (Privilege Attribute Certificate) checksum. A remote, authenticated, attacker can cause the winbindd process to crash using a legitimate Kerberos ticket. A local service with access to the winbindd privileged pipe can cause winbindd to cache elevated access permissions.

    Published:Dec 19, 2016
    Last Modified:Apr 20, 2025
    EPS:May 11, 2017
    EPSS Score:0.03245
    CVSS Score:6.5

    Affected Products

    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Storage
    Vendor
    Samba
    Product
    Samba

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://rhn.redhat.com/errata/RHSA-2017-0494.html
    http://rhn.redhat.com/errata/RHSA-2017-0495.html
    http://rhn.redhat.com/errata/RHSA-2017-0662.html
    http://rhn.redhat.com/errata/RHSA-2017-0744.html
    http://www.securityfocus.com/bid/94994
    http://www.securitytracker.com/id/1037495
    https://access.redhat.com/errata/RHSA-2017:1265
    https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43730
    https://www.samba.org/samba/security/CVE-2016-2126.html
    http://rhn.redhat.com/errata/RHSA-2017-0494.html
    http://rhn.redhat.com/errata/RHSA-2017-0495.html
    http://rhn.redhat.com/errata/RHSA-2017-0662.html
    http://rhn.redhat.com/errata/RHSA-2017-0744.html
    http://www.securityfocus.com/bid/94994
    http://www.securitytracker.com/id/1037495
    https://access.redhat.com/errata/RHSA-2017:1265
    https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43730
    https://www.samba.org/samba/security/CVE-2016-2126.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