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  3. Microsoft Skype for Business CVE-2017-11786 Privilege Escalation Vulnerability

Microsoft Skype for Business CVE-2017-11786 Privilege Escalation Vulnerability

Risk

High

Date Discovered

October 10, 2017

Description

Microsoft Skype for Business is prone to a privilege-escalation vulnerability. Attackers can exploit this issue to gain elevated privileges.

Technologies Affected

  • Microsoft Lync 2013 (32-bit) SP1
  • Microsoft Lync 2013 (64-bit) SP1
  • Microsoft Skype for Business 2016 (32-bit)
  • Microsoft Skype for Business 2016 (64-bit)

Recommendations

Deploy network intrusion detection systems to monitor network traffic for malicious activity.

Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This may indicate exploit attempts or activity that results from successful exploits.

Do not accept or execute files from untrusted or unknown sources.

Users should be cautious when installing and running application from untrusted sources.

Do not follow links provided by unknown or untrusted sources.

Do not follow links provided by unknown or untrusted sources. Web users should be cautious about following links to websites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.
Updates are available. Please see the references or vendor advisory for more information.

Credits

Jerry Decime, Hewlett Packard Enterprise
Copyright © Symantec Corporation.
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.

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