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Cisco Bug: CSCtd13825 - ARP cache table overflow

Last Modified

Aug 04, 2017

Products (1)

  • Cisco Wide Area Application Services (WAAS) Appliances

Known Affected Releases

4.1(3a) 5.3(3) 5.3(5)

Description (partial)

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.

Very Large Subnet is used in WAAS.

Related Community Discussions

7341 problem 4.2.3c
Hi, I need help with a problem with a WAE 7341. I installed and activated this device yesterday. Once inline, it came up to Gig full duplex and I rebooted. Everything was fine. Today I realised my device was down; not answering to pings; I go to check and it is turned on but the inline card is in a bypass state! I tried the console port and nothing would come up. so i rebooted the device... It loaded correclty (no issues) the I realised that I have a lot of the following messages in my syslog.txt ...
Latest activity: Feb 10, 2011
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