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Category:   Device (Router/Bridge/Hub)  >   Cisco IOS Vendors:   Cisco
Cisco IOS XR OSPF LSA Processing Flaw Lets Remote Users Cause the Target Service to Restart
SecurityTracker Alert ID:  1036909
SecurityTracker URL:
CVE Reference:   CVE-2016-6421   (Links to External Site)
Date:  Sep 28 2016
Impact:   Denial of service via network
Vendor Confirmed:  Yes  
Version(s): IOS XR
Description:   A vulnerability was reported in Cisco IOS XR. A remote user can cause the target service to restart.

A remote user can send a specially crafted Open Shortest Path First (OSPF) Link State Advertisement (LSA) update to the target device to trigger a memory error and cause the OSPF process to restart.

The vendor has assigned bug ID CSCvb05643 to this vulnerability.

Impact:   A remote user can cause the target service to restart.
Solution:   No solution was available at the time of this entry.

The vendor advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error

Message History:   None.

 Source Message Contents

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