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Category:   Device (Router/Bridge/Hub)  >   Cisco NX-OS Vendors:   Cisco
Cisco NX-OS LLDP TLV Processing Bugs Let Remote Users Cause the Target Service to Crash
SecurityTracker Alert ID:  1041919
SecurityTracker URL:  http://securitytracker.com/id/1041919
CVE Reference:   CVE-2018-0395   (Links to External Site)
Date:  Oct 18 2018
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 service to crash.

A remote user on the adjacent network can send Link Layer Discovery Protocol (LLDP) data with specially crafted type, length, and value fields (TLV) to an interface on the target device to cause the device to reload.

The following models are affected:

Nexus 2000 Series
Nexus 3000 Series
Nexus 3500 Platform
Nexus 5500 Platform
Nexus 5600 Platform
Nexus 6000 Platform
Nexus 7000 Series
Nexus 7700 Series
Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode
Unified Computing System (UCS) 6100 Series Fabric Interconnects
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects

The vendor has assigned bug IDs CSCuc98542, CSCvf23367, CSCvj94174, and CSCvj96148 to this vulnerability.

Impact:   A remote user can cause the target device 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-20181017-fxnx-os-dos

Vendor URL:  tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-fxnx-os-dos (Links to External Site)
Cause:   State error

Message History:   None.


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