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             AUSCERT External Security Bulletin Redistribution

   Security Advisories Relating to Symantec Products - Symantec Endpoint
    Protection Local Client Application Device Control Buffer Overflow
                               6 August 2014


        AusCERT Security Bulletin Summary

Product:           Symantec Endpoint Protection
Publisher:         Symantec
Operating System:  Windows
Impact/Access:     Denial of Service    -- Console/Physical
                   Increased Privileges -- Console/Physical
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-3434  

Original Bulletin: 

Comment: Exploit code has been released publicly.

Revision History:  August 6 2014: Updating this bulletin to an Alert due to the 
				  existence of publicly available exploit code
                   August 6 2014: Initial Release

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Security Advisories Relating to Symantec Products - Symantec Endpoint
Protection Local Client Application Device Control Buffer Overflow


August 4, 2014



CVSS2		Impact	Exploitability	CVSS2 Vector
Base Score

SEP Local Client ADC Buffer Overflow- Medium

6.9		10.0	3.4		AV:L/AC:M/AU:N/C:C/I:C/A:C


Symantec is aware of a local access Symantec Endpoint Protection (SEP)
client buffer overflow exploit that has been released publicly which could
potentially cause a BSOD on the client or possibly allow unauthorized
local privilege elevation on Symantec Endpoint Protection (SEP) clients.

Affected Products

Product			Version		Build	Solution(s)

Symantec Endpoint 	12.1		All	Update to 12.1 RU4 MP1b.  
Protection Client				Follow recommended mitigation 
						until update is installed

Symantec Endpoint	11.0		All	Update to 12.1 RU4 MP1b.  
Protection Client				Follow recommended mitigation 
						until update is installed

Symantec Endpoint	12.0		All	update to latest available 
Protection 12.0 Small 				build of SEP 12.1 Small 
Business Edition				Business Edition

Product Not Affected

Product					Version

Symantec Endpoint Protection Manager	All

Symantec Endpoint Protection 12.1 Small All
Business Edition

Symantec Endpoint Protection.cloud (SEP	All

Symantec Network Access Control (SNAC)	All


The sysplant driver, loaded as part of the Application and Device Control
(ADC) component on a SEP client, does not do sufficient validation of
external input which could result in a local client BSOD denial of service
or, if successfully exploited, potentially local elevation of privilege
on the client system.

Symantec Response

Symantec product engineers verified this issue and have created an update
to resolve it. Customers should use the mitigation described below until
the available update can be installed to address this issue.  Symantec is
not aware of exploitation of or adverse customer impact from this issue.

Update Information

Please see TECH223338 for further information on language and build
availability for Symantec Endpoint Protection update 12.1 RU4 MP1b.


If unable to apply the update immediately, SEP administrators can uninstall
or disable ADC in SEP 12.1 or SEP 11.0 by following the instructions
provided in KB Article, TECH223338

Symantec Security Response has released Bloodhound.Exploit.554 for this
type of issue. This detection is available through normal Symantec security

Best Practices

As part of normal best practices, Symantec strongly recommends the following:

    Restrict access to administrative or management systems to authorized
    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 potential exploit.
    Keep all operating systems and applications current with vendor patches.
    Follow a multi-layered approach to security. At a minimum, run both
    firewall and anti-malware applications 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 the detection of attacks or malicious activity related to
    the exploitation of latent vulnerabilities.


Symantec would like to thank CERT/CC for reporting this issue from Offensive
Security to Symantec and coordinating with us. Symantec further thanks
Matteo Memelli, Offensive Security for providing coordination to confirm
the issues were addressed.


BID: Security Focus, http://www.securityfocus.com, has assigned Bugtraq IDs
(BIDs) to these issues for inclusion in the Security Focus vulnerability

CVE: These issues are candidates for inclusion in the CVE list
(http://cve.mitre.org), which standardizes names for security problems.

CVE		BID			Description
CVE-2014-3434	BID 68946		SEP Local Client ADC Buffer Overflow

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 responsible disclosure guidelines.
Please contact secure@symantec.com if you feel you have discovered a
security issue in a Symantec product. A member of the Symantec Product
Security team will contact you regarding your submission to coordinate any
required response. 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 location below.
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

Copyright (c) 2014 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 Product
Security. Reprinting the whole or part of this alert in any medium other
than electronically requires permission from secure@symantec.com


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
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Symantec, Symantec products, Symantec Product Security, 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.

* Signature names may have been updated to comply
with an updated IPS Signature naming convention. See
for more information.

Last modified on: August 4, 2014

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