CVE-2012-6150 Auth bypass in n/a

What is CVE-2012-6150?

CVE-2012-6150 is a low-severity authentication bypass vulnerability in Canonical Ubuntu Linux, published on 3 Dec 2013. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-20

Which versions are affected by CVE-2012-6150?

It affects 2 products.

Products include Canonical Ubuntu Linux, Samba Samba.

How do I fix CVE-2012-6150?

Apply the vendor's patch.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2012-6150 being exploited?

There is no known exploitation of CVE-2012-6150 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2012-6150, ECHO-27a0-7e44-cd1f, GHSA-65q8-2h4w-pqq6, UBUNTU-CVE-2012-6150.