Public Date:
1403115: CVE-2016-2126 samba: Flaws in Kerberos PAC validation can trigger privilege elevation
A flaw was found in the way Samba handled PAC (Privilege Attribute Certificate) checksums. A remote, authenticated attacker could use this flaw to crash the winbindd process.

Find out more about CVE-2016-2126 from the MITRE CVE dictionary dictionary and NIST NVD.


Red Hat Enterprise Linux 5:
This vulnerability has been rated as having a security impact of Moderate. After evaluation and in accordance with the criteria noted in the product support life cycle, there are no plans to address this issue in an upcoming release. Please contact Red Hat Support for further information.

CVSS v2 metrics

Base Score 2.3
Base Metrics AV:A/AC:M/Au:S/C:N/I:N/A:P
Access Vector Adjacent Network
Access Complexity Medium
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

CVSS v3 metrics

CVSS3 Base Score 3.5
CVSS3 Base Metrics CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack Vector Adjacent Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity Impact None
Availability Impact Low

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 6 (samba) RHSA-2017:0662 2017-03-21
Red Hat Gluster 3.2 Samba on RHEL-6 (samba) RHSA-2017:0494 2017-03-23
Red Hat Enterprise Linux 7 (samba) RHSA-2017:1265 2017-05-22
Red Hat Gluster 3.2 Samba on RHEL-7 (samba) RHSA-2017:0495 2017-03-23
Red Hat Enterprise Linux 6 (samba4) RHSA-2017:0744 2017-03-21

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 samba Will not fix
Red Hat Enterprise Linux 5 samba3x Will not fix
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

External References

Last Modified