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Category:   Device (Router/Bridge/Hub)  >   Cisco IOS Vendors:   Cisco
Cisco IOS NTP Processing Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1036541
SecurityTracker URL:
CVE Reference:   CVE-2016-1478   (Links to External Site)
Date:  Aug 4 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 15.5(3)S3, 15.6(1)S2, 15.6(2)S1, 15.6(2)T1
Description:   A vulnerability was reported in Cisco IOS. A remote user can cause denial of service conditions on the target system.

The system does not properly clear invalid Network Time Protocol (NTP) packets from the interface queue. A remote user can send multiple specially crafted NTP packets to trigger an interface wedge and cause denial of service conditions.

Systems configured for NTP operations are affected.

The vendor has assigned bug ID CSCva35619 to this vulnerability.

Impact:   A remote user can cause denial of service conditions.
Solution:   The vendor has issued a fix.

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   State error

Message History:   None.

 Source Message Contents

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