Synology hat die Version 6.1.3-15152-1 seines NAS Betriebssystems DSM veröffentlicht. Dieses Update erfordert keinen Neustart der NAS, es werden aber die Dienste Samba und Domain neugestartet. In diesem Update wird nur eine Lücke in Samba geschlossen.
Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus’ Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in ‘enc_part’ instead of the unencrypted version stored in ‘ticket’. Use of the unencrypted version provides an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal and other products that embed Heimdal code; it does not apply to other instances in which this part of the Kerberos 5 protocol specification is violated.
Sicherheitslücken sind immer schlecht, also ist ein schnelles Update empfohlen, solltet ihr Samba nutzen.
Fixed Issues in 6.1.3-15152-1
- Fixed a security vulnerability regarding Samba (CVE-2017-11103).