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             AUSCERT External Security Bulletin Redistribution

                               ESB-2009.1231
       Symantec Altiris Deployment Solution Multiple Vulnerabilities
                              31 August 2009

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Symantec Altiris Deployment Solution 6.9.x
Publisher:         Symantec
Operating System:  Windows
Impact/Access:     Unauthorised Access             -- Remote/Unauthenticated
                   Modify Arbitrary Files          -- Remote/Unauthenticated
                   Execute Arbitrary Code/Commands -- Existing Account      
                   Denial of Service               -- Existing Account      
Resolution:        Patch/Upgrade

Original Bulletin: 
   http://www.symantec.com/business/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2009&suid=20090826_00

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Symantec Altiris Deployment Solution Multiple Vulnerabilities

SYM09-011

August 26, 2009

Description

Revision History
None

Severity
Low to High

Remote Access 			Yes, Adjacent Network
Local Access 			No
Authentication Required 	No
Exploit publicly available 	No

Overview
Symantecs Altiris Deployment Solution contains vulnerabilities that could 
potentially be leveraged for unauthorized file access or a denial of 
service on a client system, authentication bypass on the Server to local 
system-level access on a client system.

Affected Product(s)

Product 			Version 	Build 	Solution(s)
Altiris Deployment Solution 	6.9.x 		All 	6.9 SP3 Build 430

Details

Symantec was notified of issues impacting the Symantec Altiris Deployment 
Solution during client/server communications.

    1) The DBManager authentication can potentially be bypassed. The 
       DBManager is assigned a default listening port. A malicious user 
       with authorized network access and working knowledge of the command 
       structure of the DBManager could potentially pass unauthenticated 
       commands remotely to this service. Successful exploitation of this 
       issue could potentially result in the malicious user being able to 
       modify the Altiris Database to add/remove users and access or 
       potentially modify currently scheduled tasks which could adversely 
       impact multiple clients. This is considered a high severity issue.

    2) The Aclient GUI is not fully protected from unauthorized access. 
       While the installation directory is protected, the Everyone user 
       group is implemented with full control of the client executable by 
       default. A non-privileged user could potentially use Everyone user 
       group access to maliciously modify the client with arbitrary code. 
       The GUI binary runs with logged on user privileges by default. 
       Should any other privileged user log into the client, the results 
       could be a potential elevation of privilege and compromise of the 
       client system. This issue has a potentially high severity.

    3) When using AClient agent of the Symantec Altiris Deployment Solution, 
       an option is available to provide key-based authentication between 
       the deployment server and a client system. Once authentication has 
       been implemented, communications between the client and server is 
       secure. However, there is a small window of vulnerability, just prior 
       to the authentication handshake when authentication can potentially 
       be bypassed, e.g., when the client system is just being booted or 
       having to reconnect to the deployment solution server. At this point, 
       a malicious individual on the network with access to or the ability 
       to impersonate a deployment server could issue alternate commands to 
       a client just prior to the handshake. If successful, the client would 
       accept these commands as valid and implement them with SYSTEM level 
       privileges. A malicious user, with sufficient access to the network, 
       could potential disrupt communications between the deployment server 
       and a client system and exploit the automatic reconnection by the 
       client to attempt an attack of this nature. This is considered a 
       medium severity issue.

    4) The functionality of the Symantec Altiris Deployment Solution 
       includes the ability to transfer files from the server to the 
       deployed clients. A malicious user with network access and knowledge 
       of the port assigned for file transfer can potentially exploit a race 
       condition by making successive multiple connections to this port to 
       intercept the content of these files prior to legitimate clients 
       accessing them. Done successfully, this can result in unauthorized 
       file access and/or a potential partial denial of service. Once the 
       files have been downloaded from the deployment server, the server 
       assumes they were received by an authorized client and no longer 
       attempts to update the client with those updates.

With encryption enabled, the result of any unauthorized file access would 
only be a partial denial of service of authorized client systems failing to 
receive the available update(s). This is considered a low severity issue.

Symantec Response
Symantec engineers have verified these findings and released an update to 
resolve this issue.

Upgrade to at least version 6.9 SP3 Build 430. as follows:

    * Go to http://www.altiris.com/download.aspx
    * Enter your email address.
    * Select "Deployment Solution for Clients 6.9 SP3" from the drop-down 
      box
    * Click "Submit"
    * Accept the "End User License Agreement"
    * Click on "Deployment Solution for Clients 6.9 SP3" to download a zip 
      file containing the Deployment Solution update.
    * Unzip the update package and double-click on 
      Altiris_DeploymentSolutionWin_6_9.exe.
    * Follow the installation instructions 

Best Practices
As part of normal best practices, Symantec strongly recommends:

    * Restrict access to administration or management systems to privileged 
      users.
    * Restrict remote access, if required, to trusted/authorized systems 
      only.
    * Run under the principle of least privilege where possible to limit the 
      impact of exploit by threats.
    * Keep all operating systems and applications updated with the latest 
      vendor patches.
    * Follow a multi-layered approach to security. Run both firewall and 
      anti-malware applications, at a minimum, to provide multiple points of 
      detection and protection to both inbound and outbound threats.
    * Deploy network and host-based intrusion detection systems to monitor 
      network traffic for signs of anomalous or suspicious activity. This 
      may aid in detection of attacks or malicious activity related to 
      exploitation of latent vulnerabilities

Credit:
Symantec would like to thank Luke Jennings with MWRInfosecurity for 
reporting these issues and providing full coordination and assistance while 
Symantec resolved them.

References:
SecurityFocus, http://www.securityfocus.com, has assigned Bugtraq IDs (BID) 
to these issues for inclusion in the SecurityFocus vulnerability database. 
The BIDs assigned are
36110 for the first issue, DBManager authentication bypass
36111 for the second issue, client privilege elevation
36112 for the third issue, race condition unauthorized file access/denial of 
service
36113 for the forth issue, client/server communications authentication 
bypass

A CVE Candidate name will be requested from the Common Vulnerabilities and 
Exposures (CVE) initiative for these issues. This advisory will be revised 
accordingly upon receipt of the CVE Candidate name. These issues are 
candidates for inclusion in the CVE list (http://cve.mitre.org), which 
standardizes names for security problems.

Symantec takes the security and proper functionality of our products very 
seriously. As founding members of the Organization for Internet Safety 
(OISafety), Symantec supports and follows the principles of responsible 
disclosure. Symantec also subscribes to the vulnerability disclosure 
guidelines outlined by the National Infrastructure Advisory Council (NIAC).

Please contact secure@symantec.com if you feel you have discovered a 
security issue in a Symantec product. A Symantec Product Security team 
member will contact you regarding your submission. Symantec strongly 
recommends using encrypted email for reporting vulnerability information 
to secure@symantec.com. The Symantec Product Security PGP key can be found 
at the end of this message.

Symantec has developed a Product Vulnerability Response document outlining 
the process we follow in addressing suspected vulnerabilities in our 
products. This document is available below.

Symantec Vulnerability Response Policy
Symantec Product Vulnerability Management PGP Key Symantec Product 
Vulnerability Management PGP Key

Copyright (c) 2009 by Symantec Corp.
Permission to redistribute this alert electronically is granted as long as 
it is not edited in any way unless authorized by Symantec Security Response. 
Reprinting the whole or part of this alert in any medium other than 
electronically requires permission from secure@symantec.com

Disclaimer
The information in the advisory is believed to be accurate at the time of 
publishing based on currently available information. Use of the information 
constitutes acceptance for use in an AS IS condition. There are no 
warranties with regard to this information. Neither the author nor the 
publisher accepts any liability for any direct, indirect, or consequential 
loss or damage arising from use of, or reliance on, this information.
Symantec, Symantec products, Symantec Security Response, and 
secure@symantec.com are registered trademarks of Symantec Corp. and/or 
affiliated companies in the United States and other countries. All other 
registered and unregistered trademarks represented in this document are the 
sole property of their respective companies/owners.

Last modified on: August 26, 2009

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