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- #
- # This script was written by Renaud Deraison <deraison@cvs.nessus.org>
- #
- # See the Nessus Script License for details
- #
- # Thanks to Nicolas FISCHBACH (nico@securite.org) for his help
- #
- # Ref: http://www.cisco.com/warp/public/707/vpn3k-multiple-vuln-pub.shtml
-
-
- if(description)
- {
- script_id(11296);
- script_bugtraq_id(5622);
- script_version("$Revision: 1.4 $");
- script_cve_id("CAN-2002-1102");
-
- name["english"] = "CSCdx54675";
-
- script_name(english:name["english"]);
-
- desc["english"] = "
- The remote VPN concentrator is subject to a LAN-to-LAN
- IPSEC tunnel vulnerability which allows remote attackers
- to cause a denial of service. Existing associations might
- be removed when a new connection is made and no check is done
- in order to determine if the connection comes from the proper
- network.
-
- This vulnerability is documented as Cisco bug ID CSCdx54675
-
- Solution :
- http://www.cisco.com/warp/public/707/vpn3k-multiple-vuln-pub.shtml
- Risk factor : Medium
-
- *** As Nessus solely relied on the banner of the remote host
- *** this might be a false positive
- ";
- script_description(english:desc["english"]);
-
- summary["english"] = "Uses SNMP to determine if a flaw is present";
- script_summary(english:summary["english"]);
-
- script_category(ACT_GATHER_INFO);
-
- script_copyright(english:"This script is (C) 2003 Renaud Deraison");
-
- script_family(english:"CISCO");
-
- script_dependencie("snmp_sysDesc.nasl");
- script_require_keys("SNMP/community",
- "SNMP/sysDesc",
- "CISCO/model");
-
- exit(0);
- }
-
-
-
- # The code starts here
- ok=0;
-
- os = get_kb_item("SNMP/sysDesc"); if(!os)exit(0);
-
-
-
-
- # Is this a VPN3k concentrator ?
- if(!egrep(pattern:".*VPN 3000 Concentrator.*", string:os))exit(0);
-
-
- # < 3.5.4
- if(egrep(pattern:".*Version 3\.5\.Rel.*", string:os))ok = 1;
- if(egrep(pattern:".*Version 3\.5\.[0-3].*", string:os))ok = 1;
-
- # 3.1.x
- if(egrep(pattern:".*Version 3\.1\.*", string:os))ok = 1;
-
- # 3.0.x
- if(egrep(pattern:".*Version 3\.0\..*", string:os))ok = 1;
-
- # 2.x.x
- if(egrep(pattern:".*Version 2\..*", string:os))ok = 1;
-
-
- if(ok)security_warning(port:161, proto:"udp");
-