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11 July 2016

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             AUSCERT External Security Bulletin Redistribution

  Security Advisories Relating to Symantec Products - Symantec Client IDS
            Driver PE File Memory Corruption Denial of Service
                               11 July 2016


        AusCERT Security Bulletin Summary

Product:           Symantec Norton Security
                   Symantec Endpoint Protection
Publisher:         Symantec
Operating System:  Windows
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-5308  

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Advisories Relating to Symantec Products - Symantec Client IDS Driver
PE File Memory Corruption Denial of Service


July 7, 2016



Severity CVSS v3

CVSS3 Base Score	CVSS3 Vector

Symantec CIDS Driver PE file Memory Corruption DOS - Medium

5.0			AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H


Symantec's Client Intrusion Detection System (CIDS) driver may cause a system
crash when interacting with a specifically-crafted Portable Executable file.

Affected Products

Product				Version		Builds	Solution(s)

Norton Security			Windows Only	All	Update to CIDS v15.1.2 via LiveUpdate Defs

Symantec Endpoint Protection	Windows Only	All	Update to CIDS v15.0.6 via LiveUpdate Defs


Symantec was notified of a system crash, Denial of Service (DoS) in the CIDS 
engine driver when interacting with a specifically-crafted portable-executable
(PE) files. A malicious individual would first need to entice an authorized 
user to download a malformed PE file either through opening an email 
attachment, downloading a malicious document or application or by enticing the
user to visit a web site where a malicious file could be downloaded to their 
system. Once downloaded, the malicious file must be manipulated on the 
targeted system hard drive to interact with the vulnerable CIDS engine.

Sufficiently malformed, the code would execute at the kernel-level with system
privileges causing memory corruption resulting in a system crash.

Symantec Response

Symantec engineers have addressed this in the latest CIDS engine update 
release effective 7/7/2016 delivered to customers via LiveUpdate with normal 
definition and signature updates.

Update Information

Norton Security and SEP products that ship with the CIDS engine and regularly
launch and run either automatic or manual LiveUpdate should already have 
received an updated CIDS engine version addressing this issue. However, to 
ensure all available updates have been applied, users should manually launch 
and run LiveUpdate in Interactive mode as follows:

To perform a manual update using Symantec LiveUpdate, users should:

Access LiveUpdate in the product

Run LiveUpdate until all available updates are downloaded and installed

Symantec is not aware of exploitation of or adverse customer impact from this

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.


Discovered by Piotr Bania of Cisco Talos. Symantec would like to thank Cisco 
Talos for reporting this to us and working with us as we addressed the issue.


BID: Security Focus, http://www.securityfocus.com, has assigned a Bugtraq ID 
(BID) to this issue for inclusion in the Security Focus vulnerability 

CVE: This issue is a candidate for inclusion in the CVE list 
(http://cve.mitre.org), which standardizes names for security problems.

CVE		BID	Description

CVE-2016-5308	91608	Symantec CIDS Driver PE file Memory Corruption DOS

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.

Copyright (c) 2016 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 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 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: July 7, 2016

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