Cisco Security Notice

Cisco IOS GET VPN Encryption Policy Bypass Vulnerability

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-3436
CVE ID: CVE-2013-3436
Release Date: 2013 July 18 18:01  UTC (GMT)
Last Updated: 2013 July 18 18:01  UTC (GMT)
Related Documents:    

Summary

A vulnerability in the Cisco Group Encrypted Transport VPN (GET VPN) feature of Cisco IOS could allow traffic to bypass the configured encryption policy.

The vulnerability is due to the default, implicit policies set in place to permit Group Domain of Interpretation (GDOI) traffic to flow unencrypted to allow the GET VPN group members (GMs) to communicate with the GET VPN key servers (KSs). Only transit or to the device traffic using UDP as the transport protocol and port 848 as either the source or destination will bypass the user-defined encryption policies.

Affected Products

ProductMore InformationCVSS
IOSCSCui076985.0/4.5

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