CVE-2022-45141: samba: Samba AD DC using Heimdal can be forced to issue rc4-hmac encrypted Kerberos tickets

Severity: Critical

CVSS Score: 9.8

Since the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability was disclosed by Microsoft on Nov 8 2022 and per RFC8429 it is assumed that rc4-hmac is weak, Vulnerable Samba Active Directory DCs will issue rc4-hmac encrypted tickets despite the target server supporting better encryption (eg aes256-cts-hmac-sha1-96).