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Cisco Security Advisory: Cisco NetFlow Generation Appliance Stream Control Transmission Protocol Denial of Service Vulnerability

Advisory ID: cisco-sa-20170301-nga

Revision: 1.0

For Public Release: 2017 March 1 16:00 GMT

Last Updated: 2017 March 1 16:00 GMT

CVE ID(s): CVE-2017-3826

CVSS Score v(3): 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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Summary
=======
A vulnerability in the Stream Control Transmission Protocol (SCTP) decoder of the Cisco NetFlow Generation Appliance (NGA) could allow an unauthenticated, remote attacker to cause the device to hang or unexpectedly reload, causing a denial of service (DoS) condition.

The vulnerability is due to incomplete validation of SCTP packets being monitored on the NGA data ports. An attacker could exploit this vulnerability by sending malformed SCTP packets on a network that is monitored by an NGA data port. SCTP packets addressed to the IP address of the NGA itself will not trigger this vulnerability. An exploit could allow the attacker to cause the appliance to become unresponsive or reload, causing a DoS condition. User interaction could be needed to recover the device using the reboot command from the CLI.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170301-nga [“https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170301-nga”]

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