Vigil@nce - Samba: privilege escalation via DENY rules for file access
March 2017 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can access to files served by Samba and protected by
DENY rules.
– Impacted products: Samba.
– Severity: 2/4.
– Creation date: 18/01/2017.
DESCRIPTION OF THE VULNERABILITY
The Samba product offers a file server.
However, access rules of type DENY are now rightly processed when
applied to the special SSID S-1-3-4.
An attacker can therefore access to files served by Samba and
protected by DENY rules.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Samba-privilege-escalation-via-DENY-rules-for-file-access-21618