eEye Digital Security eEye Digital Security
  • Login to the eEye Business Client Portal
  • Shop for eEye Products
  • Read the eEye Blog
  • Subscribe to eEye RSS Feeds
  • Follow eEye on Twitter
  • Follow eEye of Facebook

Research > Zero-Day Tracker > 20130719

Cisco IOS GET VPN Encryption Policy Bypass

Date Disclosed:

Date Patched:
Patch Not Yet Available


Affected Software:
Cisco IOS 15.1M 15.1(4)M, 15.1(4)M0a, 15.1(4)M0b, 15.1(4)M1, 15.1(4)M10, 15.1(4)M2, 15.1(4)M3, 15.1(4)M3a, 15.1(4)M4, 15.1(4)M5, 15.1(4)M6, 15.1(4)M7, and 15.1(4)M8

Cisco IOS contains a vulnerability whereby a remote, unauthenticated attacker could bypass configured encryption policies on a vulnerable IOS device. This could allow an attacker to gain access to sensitive information.


Code Execution:

Security Feature Bypass
Cisco IOS contains a vulnerability within the default policies set in place to allow GDOI (Group Domain of Interpretation) traffic to travel in the clear (unencrypted) to allow the GET VPN group members to communicate with VPN key servers. Traffic over UDP port 848 will bypass encryption. 

No reasonable mitigations are available currently.

BeyondTrust's Retina® Network Security Scanner scans devices to detect for this vulnerability.

  • 19765 - Cisco IOS GET VPN Encryption Policy Bypass (Zero-Day) - SNMP


2013-07-19 - Cisco releases security advisory.

Copyright ©1998-2011 eEye Digital Security
Permission is hereby granted for the redistribution of this alert electronically. It is not to be edited in any way without express consent of eEye. If you wish to reprint the whole or any part of this alert in any other medium excluding electronic medium, please email for permission.

The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are no warranties, implied or express, with regard to this information. In no event shall the author be liable for any direct or indirect damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk.

Next Steps

Free Trial
Test drive an eEye product
On-demand Demo
See an online product tour
One-on-one Demo
Schedule a personalized tour
Compare Products
See side-by-side features
Buy Now
Go to eEye product store
Contact | Site Map | Privacy | Website Feedback | 1.866.339.3732
© 1998 – 2012 eEye Digital Security. All rights reserved.