TTCSIRT-020.071717: TT-CSIRT Advisory – Samba Security Updates
The Samba Team has reported a critical vulnerability in all versions of Samba from 4.0.0 onward using embedded Heimdal Kerberos. A Man-In-The-Middle Attacker may impersonate a trusted server and thus gain elevated access to the domain by returning malicious replication or authorization data.
|A patch addressing this defect has been posted to https://www.samba.org/samba/security/ while Samba 4.6.6, 4.5.12 and 4.4.15 have been issued as security releases to correct the defect.|
Samba vendors and administrators running affected versions linked against the embedded Heimdal Kerberos are advised to upgrade or apply the patch as soon as possible.