GEN:SID 1:3056
Message NETBIOS SMB-DS NT Trans NT CREATE unicode invalid SACL ace size dos attempt
Summary This event is generated when an attempt is made to exploit a known
vulnerability in Ethereal.
Impact Serious. Denial of Service (DoS).
Detailed Information Ethereal is a multi-platform network protocol analyser capable of
displaying network data to the user in a graphical user interface.

An error in the processing of access control lists (ACLs) concerning the
size of the access control entries (ACEs) may lead to a Denial of Service
(DoS) condition in Ethereal. The ACL parsing routine trusts the size of
the ACE given in the packet during processing. If a sufficiently large ACL
structure is supplied combined with a specified ACE size of 0, it is
possible to cause the DoS condition to occur.
Affected Systems Ethereal 0.10.7 and prior
Attack Scenarios An attacker needs to craft packet data containing large NT ACLs, the
attacker then needs to specify one of the ACEs as having a size of 0.
Ease of Attack Moderate.
Corrective Action Apply the appropriate vendor supplied patch

Upgrade to the latest non-affected version of the software.
Additional References