A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25719
Reference (s):
- https://bugzilla.redhat.com/show_bug.cgi?id=2019732
- URL: https://bugzilla.redhat.com/show_bug.cgi?id=2019732
- https://www.samba.org/samba/security/CVE-2020-25719.html
- URL: https://www.samba.org/samba/security/CVE-2020-25719.html