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CVE-2012-6150

18
FAUCET Score

CVE-2012-6150 describes a vulnerability in the winbind_name_list_to_sid_string_list function within Samba versions through 4.1.2, affecting Canonical Samba and Ubuntu Linux. This flaw allows remote authenticated users to bypass access restrictions if an administrator misconfigures pam_winbind with invalid group names. The vulnerability has a CVSS score of 3.6, indicating a low severity with network access, high attack complexity, single authentication required, and potential partial confidentiality and integrity impacts. There is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage, suggesting it is not a widely targeted or discussed vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.3.10, < 3.4.0CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 3.4.3, < 3.6.22CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.13CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.1.0, < 4.1.3CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
10.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 2.0

3.6LOW

AV:N/AC:H/Au:S/C:P/I:P/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
SINGLE
Exploitability Score
3.9
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.79%
Probability of exploitation in next 30 days
EPSS Percentile
88.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0379 is in the 97th percentile among its peer group of 1,637 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: samba3x-0:3.6.6-0.139.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: samba-0:3.6.9-168.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: samba4-0:4.0.0-61.el6_5.rc4
View patch

Vendor Advisories (1)

redhatCVE-2012-6150Low

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

Jun 12, 2012

References

lists.fedoraproject.org / pipermail/package-announce/2014-August/136864.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2014-June/134717.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-01/msg00002.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-04/msg00047.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-04/msg00048.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2013-12/msg00088.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2014-03/msg00063.html
Mailing ListThird Party Advisory
marc.info
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2013/12/03/5
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2014-0330.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
bugzilla.samba.org / show_bug.cgi
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/glsa-201502-15.xml
Third Party Advisory
lists.samba.org / archive/samba-technical/2012-June/084593.html
ExploitVendor Advisory
lists.samba.org / archive/samba-technical/2013-November/096411.html
ExploitVendor Advisory
mandriva.com / security/advisories
Third Party Advisory
ubuntu.com / usn/USN-2054-1
Third Party Advisory