CVE-2016-2126

MEDIUM

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.

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

Details

Source: MITRE

Published: 2017-05-11

Updated: 2018-05-11

Type: CWE-264

Risk Information

CVSS v2.0

Base Score: 4

Vector: (AV:N/AC:L/Au:S/C:N/I:N/A:P)

Impact Score: 2.9

Exploitability Score: 8

Severity: MEDIUM

CVSS v3.0

Base Score: 6.5

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

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM