CVE-2012-6150

samba: pam_winbind fails open when non-existent group specified to require_membership_of

Severity Score

3.6

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The winbind_name_list_to_sid_string_list function in nsswitch/pam_winbind.c in Samba through 4.1.2 handles invalid require_membership_of group names by accepting authentication by any user, which allows remote authenticated users to bypass intended access restrictions in opportunistic circumstances by leveraging an administrator's pam_winbind configuration-file mistake.

La función winbind_name_list_to_sid_string_list en nsswitch/pam_winbind.c en Samba hasta v4.1.2 maneja nombres de grupo require_membership_of inválidos aceptando autenticación de cualquier usuario, lo cual permite a usuarios autenticados remotamente sortear restricciones de acceso en circunstancias oportunistas mediante el aprovechamiento de un error en el fichero de configuración de administración pam_winbind.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

None

Attack Vector

Adjacent

Attack Complexity

High

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2012-12-06 CVE Reserved
2013-12-03 CVE Published
2024-08-06 CVE Updated
2024-08-06 First Exploit
2024-10-23 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation

CAPEC

References (18)

URL	Tag	Source
http://openwall.com/lists/oss-security/2013/12/03/5	Mailing List

URL	Date	SRC
https://lists.samba.org/archive/samba-technical/2012-June/084593.html	2024-08-06
https://lists.samba.org/archive/samba-technical/2013-November/096411.html	2024-08-06

URL	Date	SRC
https://bugzilla.samba.org/show_bug.cgi?id=10300	2022-09-01

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html	2022-09-01
http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html	2022-09-01
http://lists.opensuse.org/opensuse-security-announce/2014-01/msg00002.html	2022-09-01
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html	2022-09-01
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html	2022-09-01
http://lists.opensuse.org/opensuse-updates/2013-12/msg00088.html	2022-09-01
http://lists.opensuse.org/opensuse-updates/2014-03/msg00063.html	2022-09-01
http://marc.info/?l=bugtraq&m=141660010015249&w=2	2022-09-01
http://rhn.redhat.com/errata/RHSA-2014-0330.html	2022-09-01
http://security.gentoo.org/glsa/glsa-201502-15.xml	2022-09-01
http://www.mandriva.com/security/advisories?name=MDVSA-2013:299	2022-09-01
http://www.ubuntu.com/usn/USN-2054-1	2022-09-01
https://bugzilla.redhat.com/show_bug.cgi?id=1036897	2014-04-09
https://access.redhat.com/security/cve/CVE-2012-6150	2014-04-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				>= 3.3.10 < 3.4.0 Search vendor "Samba" for product "Samba" and version " >= 3.3.10 < 3.4.0"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				>= 3.4.3 < 3.6.22 Search vendor "Samba" for product "Samba" and version " >= 3.4.3 < 3.6.22"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				>= 4.0.0 < 4.0.13 Search vendor "Samba" for product "Samba" and version " >= 4.0.0 < 4.0.13"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				>= 4.1.0 < 4.1.3 Search vendor "Samba" for product "Samba" and version " >= 4.1.0 < 4.1.3"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				10.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "10.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				13.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "13.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				13.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "13.10"		-		Affected