samba: pam_winbind fails open when non-existent group specified to require_membership_of
Published Dec 3, 2013
3.6
LOWCVSS 2.0
EPSS 3.79%
Description
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.
Affected products
No data.
Configuration 1
Configuration 2
- 10.04
- 12.04
- 12.10
- 13.04
- 13.10
No data.
Red Hat Enterprise Linux 5
samba3x-0:3.6.6-0.139.el5_10
Fixed · RHSA-2014:0330
Red Hat Enterprise Linux 6
samba-0:3.6.9-168.el6_5
Fixed · RHSA-2014:0330
Red Hat Enterprise Linux 6
samba4-0:4.0.0-61.el6_5.rc4
Fixed · RHSA-2014:0383
Red Hat Enterprise Linux 5
samba
Not affected
Red Hat Enterprise Linux 7
samba
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | samba3x-0:3.6.6-0.139.el5_10 | Fixed | RHSA-2014:0330 |
| Red Hat Enterprise Linux 6 | samba-0:3.6.9-168.el6_5 | Fixed | RHSA-2014:0330 |
| Red Hat Enterprise Linux 6 | samba4-0:4.0.0-61.el6_5.rc4 | Fixed | RHSA-2014:0383 |
| Red Hat Enterprise Linux 5 | samba | Not affected | n/a |
| Red Hat Enterprise Linux 7 | samba | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:H/Au:S/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.79% (0.03790) | 89.64th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.79% (0.03790) | 88.55th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.35% (0.00353) | 55.51th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.12% (0.00124) | 48.54th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.18% (0.00178) | 55.21th | v3 (v2023.03.01) |
| Jul 16, 2023 | 0.13% (0.00126) | 46.30th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00090) | 36.68th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.19% (0.02186) | 80.97th | v2 (v2022.01.01) |
| Feb 13, 2023 | 2.19% (0.02186) | 80.49th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.53% (0.02528) | 81.34th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.19% (0.02186) | 79.16th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.19% (0.02186) | 57.93th | v2 (v2022.01.01) |
References (20)
- http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2014-01/msg00002.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00088.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2014-03/msg00063.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://marc.info/?l=bugtraq&m=141660010015249&w=2 vendor-advisoryx_refsource_HPMailing ListThird Party Advisory
- http://openwall.com/lists/oss-security/2013/12/03/5 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2014-0330.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://security.gentoo.org/glsa/glsa-201502-15.xml vendor-advisoryx_refsource_GENTOOThird Party Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:299 vendor-advisoryx_refsource_MANDRIVAThird Party Advisory
- http://www.ubuntu.com/usn/USN-2054-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2012-6150 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1036897 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=10300 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://lists.samba.org/archive/samba-technical/2012-June/084593.html mailing-listx_refsource_MLISTExploitVendor Advisory
- https://lists.samba.org/archive/samba-technical/2013-November/096411.html mailing-listx_refsource_MLISTExploitVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2012-6150
- https://www.cve.org/CVERecord?id=CVE-2012-6150
Change history (0)
No recorded changes yet.