Vulnerability 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.
Severity: MEDIUM (6.5) Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| samba | sisyphus | 4.5.3-alt1.S1 | 4.20.1-alt2 | ALT-PU-2016-2465-1 | 175127 | Fixed |
| samba | p10 | 4.5.3-alt1.S1 | 4.19.6-alt2 | ALT-PU-2016-2465-1 | 175127 | Fixed |
| samba | p9 | 4.5.3-alt1.S1 | 4.14.10-alt2 | ALT-PU-2016-2465-1 | 175127 | Fixed |
| samba | p8 | 4.5.3-alt1.M80P.1 | 4.9.18-alt1 | ALT-PU-2016-2468-1 | 175128 | Fixed |
| samba | c10f1 | 4.5.3-alt1.S1 | 4.16.11-alt2 | ALT-PU-2016-2465-1 | 175127 | Fixed |
| samba | c9f2 | 4.5.3-alt1.S1 | 4.14.14-alt0.c9.1 | ALT-PU-2016-2465-1 | 175127 | Fixed |
| samba | c7 | 4.3.13-alt0.M70C.2 | 4.6.15-alt1.M70C.1 | ALT-PU-2017-1360-1 | 175473 | Fixed |
| samba | p11 | 4.5.3-alt1.S1 | 4.20.1-alt1 | ALT-PU-2016-2465-1 | 175127 | Fixed |
| samba-DC | p8 | 4.5.3-alt1.M80P.1 | 4.9.18-alt1 | ALT-PU-2016-2469-1 | 175128 | Fixed |
| samba-DC | c7 | 4.4.14-alt0.M70C.1 | 4.6.15-alt1.M70C.1 | ALT-PU-2017-1671-1 | 183462 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://www.samba.org/samba/security/CVE-2016-2126.html |
|
| 1037495 |
|
| 94994 |
|
| RHSA-2017:1265 |
|
| RHSA-2017:0744 |
|
| RHSA-2017:0662 |
|
| RHSA-2017:0495 |
|
| RHSA-2017:0494 |
|
| https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43730 |
|