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Guest

Security Activity Bulletin

Windows Guest Login

 
Threat Type:IntelliShield: Applied Mitigation Bulletin
IntelliShield ID:1142
Version:1
First Published:2007 May 01 02:44 GMT
Last Published:2007 May 01 02:44 GMT
Port: 139
Urgency:Unlikely Use
Credibility:Highly Credible
Severity:Mild Damage
Related Resources:
View related IPS Signature
 
 
Version Summary:

Server Message Block?servers contain a vulnerability in the default Guest account login that could allow an unauthenticated, remote attacker to gain user privileges to view or modify files and gain control of the affected system.

 

Description
 

Server Message Block (SMB) is a protocol for sharing files, printers, serial ports, and communications abstractions, such as named pipes and mail slots between computers.? Microsoft Windows operating systems utilize SMB server implementations.

Since SMB servers have a default Guest account, an unauthenticated, remote attacker attempting to login with an unrecognized account name will be logged in as "Guest."? An exploit could allow the attacker to gain user privileges to view or modify files and gain control of the affected system.

Administrators are advised to disable all Guest accounts on local workstations and servers and domain controllers and to limit privileges to trusted users.


Signatures
 
Cisco Intrusion Prevention System (IPS) 6.0
Signature IDSignature NameReleaseLatest Release Date
5576/0SMB Login successful with Guest PrivilegesS6332012 Mar 16 
 
Alert History
 

This is a Security Activity Bulletin



Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
N/A

Associated Products:
IntelliShieldSecurity Activity Bulletin Original Release Base




Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.


LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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