Cisco Bug: CSCtd13825 - ARP cache table overflow
Apr 04, 2018
- Cisco Wide Area Application Services (WAAS) Appliances
Known Affected Releases
4.1(3a) 5.3(3) 5.3(5)
Symptom: Neighbor Table overflow messages seen in kernel log buffer. Can be caused by huge L2 network or by attack: A vulnerability in the Cisco Wide Area Application Services (WAAS) appliance could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. The vulnerability is due to uneccessary caching of packet data for a specific type of traffic. An attacker could exploit this vulnerability by sending large volumes of crafted traffic to the affected device. A successful exploit could allow the attacker to cause the affected device to stop processing network traffic. Conditions: Very Large Subnet is used in WAAS.
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