Cisco PIX TTL denial of service
| cisco-pix-ttl-dos (25079) |  Medium Risk |
Description:
Cisco PIX Firewalls could allow a temporary denial of service attack targeting new TCP connections originating from the external network. If a remote attacker sends a malicious TCP packet with a TTL of N-1 for the destination value, the attacker could cause the firewall to temporarily disable communication between the source and destination port pair.
Consequences:
Denial of Service
Remedy:
No remedy available as of July 9, 2011.
References:
- Cisco Security Notice 2006 March 07 2030 UTC (GMT): Cisco Security Notice: Response to Cisco PIX embryonic state machine TTL(n-1) DoS and Cisco PIX embryonic state machine 1b data DoS.
- Full-Disclosure Mailing List, Tue Mar 07 2006 - 12:05:40 CST: Cisco PIX embryonic state machine TTL(n-1) DoS.
Platforms Affected:
- Cisco PIX Firewall 6.3
- Cisco PIX Firewall 7.0
Reported:
Mar 07, 2006
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