CVE-2016-2126

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    CVE-2016-2126

    Published: 11 May 2017Last Modified: 8 Jul 2026

    Summary:

    Details: 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.

    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

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- df33344d8eb40221d60c99931690703a11d91bc2
    Fixed -09348d38684215a34b091dd98ea7df21fc07f32c

    Affected versions

    samba-4.4.7
    samba-4.4.4
    samba-4.4.3
    samba-4.4.2
    samba-4.4.1
    samba-4.4.0

    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