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Cisco Bug: CSCtd13825 - ARP cache table overflow

Last Modified

Apr 04, 2018

Products (1)

  • Cisco Wide Area Application Services (WAAS) Appliances

Known Affected Releases

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

Description (partial)

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.

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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