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Category:   Device (Router/Bridge/Hub)  >   Cisco Catalyst Switch Vendors:   Cisco
Cisco Catalyst Switch IPv6 ND Packet Processing Memory Leak Lets Remote Users Consume Excessive CPU Resources on the Target System
SecurityTracker Alert ID:  1037657
SecurityTracker URL:  http://securitytracker.com/id/1037657
CVE Reference:   CVE-2017-3803   (Links to External Site)
Date:  Jan 20 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2960X, 3750X
Description:   A vulnerability was reported in Cisco Catalyst 2960X and 3750X Switches. A remote user can consume excessive CPU resources on the target system.

A remote user on the local network can send specially crafted IPv6 Neighbor Discovery (ND) packets to trigger a memory leak in the software forwarding queue and consume excessive CPU resources on the target system.

Systems configured to punt IPv6 traffic to the CPU are affected.

The vendor has assigned bug ID CSCva72252 to this vulnerability.

Impact:   A remote user can consume excessive CPU resources on the target system.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170118-catalyst

Vendor URL:  tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170118-catalyst (Links to External Site)
Cause:   Resource error

Message History:   None.


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