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.
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.
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