Уязвимость LDAP-сервера пакета программ сетевого взаимодействия Samba, связанная с ошибкой при обработке запросов, содержащих зацикленные записи CNAME, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость компонента сборки MIT Kerberos Samba AD DC программ сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании

A denial of service vulnerability was discovered in Samba's LDAP server before versions 4.7.12, 4.8.7, and 4.9.3. A CNAME loop could lead to infinite recursion in the server. An unprivileged local attacker could create such an entry, leading to denial of service.

Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.