Cisco PIX Firewall sending large amount of ICMP echo requests causes denial of service
| cisco-pix-icmprequest-dos (13351) |  Low Risk |
Description:
Cisco PIX Firewall is vulnerable to a denial of service, caused by the consumption of the pool of network address translation (NAT) addresses. A remote attacker can send a large amount of ICMP echo request packets to the global pool IP addresses on the firewall, causing the firewall to hold associated NAT addresses, resulting in a denial of service. The firewall must be rebooted or reloaded to regain normal functionality.
Platforms Affected:
- Cisco, PIX Firewall 6.3
Remedy:
Upgrade to the latest firmware version (6.3(3)105 or later), as listed in Full-Disclosure Mailing List, Thu, 20 Nov 2003 13:36:43 -0000. See References.
Consequences:
Denial of Service
References:
- Full-Disclosure Mailing List, Thu Nov 20 2003 - 07:36:43 CST, Potential denial of service bug in Cisco Pix Firewall IOS resolve d in 6.3(3)105 at http://archives.neohapsis.com/archives/fulldisclosure/2003-q4/2734.html.
- BID-8754: Cisco PIX ICMP Echo Request Network Address Translation Pool Exhaustion Vulnerability
Reported:
Oct 03, 2003
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