CVE-2016-2126 — MEDIUM (6.5)

Q: How severe is CVE-2016-2126?

CVE-2016-2126 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2016-2126?

Check the references section above for vendor advisories and patch information. Affected products include: Samba Samba.

Vulnerability 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 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Samba	Samba	>= 4.0.0, < 4.3.13

Related Weaknesses (CWE)

CWE-264

References

http://rhn.redhat.com/errata/RHSA-2017-0494.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0495.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0662.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0744.htmlThird Party Advisory
http://www.securityfocus.com/bid/94994Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037495Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:1265Third Party Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43730Third Party Advisory
https://www.samba.org/samba/security/CVE-2016-2126.htmlVendor Advisory
http://rhn.redhat.com/errata/RHSA-2017-0494.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0495.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0662.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0744.htmlThird Party Advisory
http://www.securityfocus.com/bid/94994Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037495Third Party AdvisoryVDB Entry

FAQ

What is CVE-2016-2126?

CVE-2016-2126 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 wi...

How severe is CVE-2016-2126?

CVE-2016-2126 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2016-2126?

Check the references section above for vendor advisories and patch information. Affected products include: Samba Samba.