CVE-2014-8143

Samba 4.0.x anterior a 4.0.24, 4.1.x anterior a 4.1.16, y 4.2.x anterior a 4.2rc4, cuando un Active Directory Domain Controller (AD DC) está configurado, permite a usuarios remotos autenticados configurar el bit de LDB userAccountControl UF_SERVER_TRUST_ACCOUNT, y como consecuencia ganar privilegios, mediante el aprovechamiento de la delegación de autoridad para la creación de cuentas de usuarios o cuentas de ordenadores.

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 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. An uninitialized pointer use flaw was found in the Samba daemon (smbd). A malicious Samba client could send specially crafted netlogon packets that, when processed by smbd, could potentially lead to arbitrary code execution with the privileges of the user running smbd (by default, the root user). The updated packages provides a solution for these security issues.