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Category:   Device (Router/Bridge/Hub)  >   Cisco ASR Router Vendors:   Cisco
Cisco ASR 5000 Series Router IPv6 Fragment Reassembly Bug Lets Remote Users Cause the Target NPU Process to Reload
SecurityTracker Alert ID:  1037416
SecurityTracker URL:  http://securitytracker.com/id/1037416
CVE Reference:   CVE-2016-6467   (Links to External Site)
Date:  Dec 9 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5000 Series; 20.0.0, 21.0.0, 21.0.M0.64702
Description:   A vulnerability was reported in Cisco ASR 5000 Series Routers. A remote user can cause the target service to reload.

A remote user can send a specially crafted IPv6 fragment chain to the target device to exploit an input validation flaw in the StarOS IPv6 packet fragment reassembly process and cause the target Network Processing Unit (NPU) process to reload. User traffic may be temporarily disrupted.

The vendor has assigned bug ID CSCva84552 to this vulnerability.

Impact:   A remote user can cause the target NPU process to reload.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161207-asr

Vendor URL:  tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161207-asr (Links to External Site)
Cause:   Input validation error, State error

Message History:   None.


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