CVE-2016-2126 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5