1. Symantec/
  2. Security Response/
  3. Microsoft ASP.NET Core MVC Multiple Privilege Escalation Vulnerabilities

Microsoft ASP.NET Core MVC Multiple Privilege Escalation Vulnerabilities

Risk

High

Date Discovered

September 13, 2016

Description

Microsoft ASP.NET Core MVC is prone to multiple privilege escalation vulnerabilities. Attackers can exploit these issues to gain elevated privileges. Microsoft ASP.NET Core MVC 1.0.0 is vulnerable.

Technologies Affected

  • Microsoft ASP.NET Core MVC 1.0.0

Recommendations

Block external access at the network boundary, unless external parties require service.

Filter access to the affected computer at the network boundary if global access isn't required. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

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

Deploy NIDS to monitor network traffic for signs of malicious activity such as requests containing suspicious URI sequences. Since the webserver may also log such requests, audit its logs regularly.

Run all software as a nonprivileged user with minimal access rights.

To limit the consequences of a successful exploit, run server processes within a restricted environment using facilities such as chroot or jail.

Implement multiple redundant layers of security.

Various memory-protection schemes (such as nonexecutable and randomly mapped memory segments) may hinder an attacker's ability to exploit this vulnerability to execute arbitrary code.
Updates are available. Please see the references or vendor advisory for more information.

Credits

Microsoft
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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