Samba 4.0.x before 4.0.24, 4.1.x before 4.1.16, and 4.2.x before 4.2rc4, when an Active Directory Domain Controller (AD DC) is configured, allows remote authenticated users to set the LDB userAccountControl UF_SERVER_TRUST_ACCOUNT bit, and consequently gain privileges, by leveraging delegation of authority for user-account or computer-account creation.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2014-8143 from the MITRE CVE dictionary dictionary and NIST NVD.
Not vulnerable. This issue did not affect the versions of samba as shipped with Red Hat Enterprise Linux 5, 6 and 7, and Red Hat Storage 2.1 and 3.0, versions of samba3x as shipped with Red Hat Enterprise Linux 5, versions of samba4 as shipped with Red Hat Enterprise Linux 6, as they did not include support for Samba Active Directory Domain Controller. All shipped Samba versions are using MIT Kerberos implementation as its Kerberos infrastructure of choice. The Samba builds shipped are using MIT Kerberos implementation in order to allow system-wide interoperability between both desktop and server applications running on the same machine.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 4 |
|---|---|
| Base Metrics | AV:A/AC:H/Au:S/C:P/I:P/A:P |
| Access Vector | Adjacent Network |
| Access Complexity | High |
| Authentication | Single |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Gluster Storage 3.0 | samba | Not affected |
| Red Hat Gluster Storage 2.1 | samba | Not affected |
| Red Hat Enterprise Linux 7 | samba | Not affected |
| Red Hat Enterprise Linux 6 | samba4 | Not affected |
| Red Hat Enterprise Linux 6 | samba | Not affected |
| Red Hat Enterprise Linux 5 | samba | Not affected |
| Red Hat Enterprise Linux 5 | samba3x | Not affected |
Vulmon