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Category:   Device (Router/Bridge/Hub)  >   Cisco NX-OS Vendors:   Cisco
Cisco NX-OS BGP Processing Flaw Lets Remote Users Cause the Target System to Crash
SecurityTracker Alert ID:  1036950
SecurityTracker URL:
CVE Reference:   CVE-2016-1454   (Links to External Site)
Date:  Oct 5 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Cisco NX-OS. A remote user can cause the target system to reload.

A remote user that is a trusted Border Gateway Protocol (BGP) peer of the target or can inject BGP messages can send specially crafted BGP update messages to the target device via TCP port 179 to cause the target device to reload.

The packet must arrive via an existing BGP session.

If all BGP peers of the target device are Cisco IOS, IOS-XE, or IOS-XR devices and are not configured for Cisco Multicast VPN (MVPN) interautonomous system support, the device is not exploitable via the network.

The following products are affected:

Nexus 1000v Series Switches
Nexus 2000 Series Fabric Extenders
Nexus 3000 Series Switches
Nexus 3500 Platform Switches
Nexus 5000 Series Switches
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 6000 Series Switches
Nexus 7000 Series Switches
Nexus 7700 Series Switches
Nexus 9000 Series Switches in ACI mode
Nexus 9000 Series Switches in NX-OS mode

The vendor has assigned bug IDs CSCuq77105 and CSCux11417 to this vulnerability.

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

A patch matrix is available in the vendor advisory.

The vendor advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Input validation error

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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