Run Netstat over an SSH Connection

###############################################################################
# OpenVAS Vulnerability Test
# $Id: GSHB_SSH_netstat.nasl 7076 2017-09-07 11:53:47Z teissa $
#
# Run Netstat over an SSH Connection
#
# Authors:
# Thomas Rotter <[email protected]>
#
# Copyright:
# Copyright (c) 2010 Greenbone Networks GmbH, http://www.greenbone.net
#
#
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

tag_summary = "Run Netstat over an SSH Connection.";

if(description)
{
  script_id(96082);
  script_version("$Revision: 7076 $");
  script_tag(name:"last_modification", value:"$Date: 2017-09-07 13:53:47 +0200 (Thu, 07 Sep 2017) $");
  script_tag(name:"creation_date", value:"2010-06-02 09:25:45 +0200 (Wed, 02 Jun 2010)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:N");
  script_tag(name:"qod_type", value:"remote_active");  
  script_name("Run Netstat over an SSH Connection");


  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2010 Greenbone Networks GmbH");
  script_family("IT-Grundschutz");
  script_mandatory_keys("Compliance/Launch/GSHB");
  script_dependencies("gather-package-list.nasl");
  script_tag(name : "summary" , value : tag_summary);
  exit(0);
}

cmdline = 0;
include("ssh_func.inc");

port = get_preference("auth_port_ssh");
if(!port) port = get_kb_item("Services/ssh");
if(!port) {
    port = 22;
}
sock = ssh_login_or_reuse_connection();
if(!sock) {
    error = get_ssh_error();
    if (!error) error = "No SSH Port or Connection!";
    log_message(port:port, data:error);
    set_kb_item(name: "GSHB/SSH/NETSTAT", value:"nosock");
    set_kb_item(name: "GSHB/SSH/NETSTAT/log", value:error);
    exit(0);
}

uname = get_kb_item( "ssh/login/uname" );
uname = ereg_replace(pattern:'\n',replace:'', string:uname);

if (uname !~ "SunOS .*"){
  netstat = ssh_cmd(socket:sock, cmd:"netstat -atun");

  if ("Zeigt Protokollstatistiken" >< netstat || "Displays protocol statistics" >< netstat){
    netstat = ssh_cmd(socket:sock, cmd:"netstat -atn");
  }
}else if (uname =~ "SunOS .*"){
  netstat = ssh_cmd(socket:sock, cmd:"netstat -an -P tcp");
  END = 0;
  netstats = split(netstat, keep:0);
  for(i=1; i<max_index(netstats); i++){
    if (netstats[i]  =~ ".*ctive ((U|u)(N|n)(I|i)(X|x)) domain socket.*") END = 1;
    if (!END) netstattcp += netstats[i] +'\n';
  }
  netstat = ssh_cmd(socket:sock, cmd:"netstat -an -P udp");
  netstats = split(netstat, keep:0);
  END = 0;
  for(i=1; i<max_index(netstats); i++){
    if (netstats[i] =~ ".*ctive ((U|u)(N|n)(I|i)(X|x)) domain socket.*") END = 1;
    if (!END) netstatudp += netstats[i] +'\n';
  }
  netstat = netstattcp + '\n' + netstatudp;
}  
if (!netstat) netstat = "none";

set_kb_item(name: "GSHB/SSH/NETSTAT", value:netstat);

exit(0);