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Category:   Device (Router/Bridge/Hub)  >   Cisco IOS Vendors:   Cisco
Cisco IOS XE/XR IPv6 Packet Processing Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1035965
SecurityTracker URL:  http://securitytracker.com/id/1035965
CVE Reference:   CVE-2016-1409   (Links to External Site)
Date:  May 25 2016
Impact:   Denial of service via network
Vendor Confirmed:  Yes  
Version(s): IOS XE, IOS XR
Description:   A vulnerability was reported in Cisco IOS XE/XR. A remote user can cause denial of service conditions on the target system.

A remote user can send specially crafted IPv6 Neighbor Discovery packets to trigger a processing logic error and cause the target device to stop processing IPv6 traffic.

The vendor has assigned bug IDs CSCuz66542 and CSCuz79330 to this vulnerability.

The following products running IOS XR and IOS XE are affected:

IOS XR:

Cisco 12000 Series Routers
Cisco ASR 9000 Series Aggregation Services Routers
Cisco Carrier Routing System
Cisco Network Convergence System 4000 Series
Cisco Network Convergence System 6000 Series Routers

IOS XE:

Cisco 4300 Series Integrated Services Routers
Cisco 4400 Series Integrated Services Routers
Cisco ASR 1000 Series Aggregation Services Routers

Impact:   A remote user can cause the target device to stop processing IPv6 traffic.
Solution:   No solution was available at the time of this entry.

The vendor is working on a fix.

The vendor's advisory is available at:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160525-ipv6

Vendor URL:  tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160525-ipv6 (Links to External Site)
Cause:   State error

Message History:   None.


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