Dienstplan Predictable Random Password Generation Vulnerability

# SPDX-FileCopyrightText: 2011 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.103237");
  script_version("2023-12-13T05:05:23+0000");
  script_tag(name:"last_modification", value:"2023-12-13 05:05:23 +0000 (Wed, 13 Dec 2023)");
  script_tag(name:"creation_date", value:"2011-09-02 13:13:57 +0200 (Fri, 02 Sep 2011)");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");

  script_name("Dienstplan Predictable Random Password Generation Vulnerability");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/49412");
  script_xref(name:"URL", value:"http://www.thomas-gubisch.de/dienstplan.html");
  script_xref(name:"URL", value:"http://archives.neohapsis.com/archives/fulldisclosure/current/0370.html");

  script_tag(name:"qod_type", value:"remote_banner");
  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_copyright("Copyright (C) 2011 Greenbone AG");
  script_dependencies("find_service.nasl", "no404.nasl", "webmirror.nasl", "DDI_Directory_Scanner.nasl", "gb_php_http_detect.nasl", "global_settings.nasl");
  script_require_ports("Services/www", 80);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_tag(name:"solution", value:"Updates are available. Please see the references for more information.");

  script_tag(name:"solution_type", value:"VendorFix");

  script_tag(name:"summary", value:"Dienstplan is prone to an insecure random password generation
vulnerability.

Successfully exploiting this issue may allow an attacker to guess
randomly generated passwords.

Versions prior to Dienstplan 2.3 are vulnerable.");
  exit(0);
}

include("http_func.inc");
include("http_keepalive.inc");
include("port_service_func.inc");
include("list_array_func.inc");
include("host_details.inc");
include("version_func.inc");

port = http_get_port(default:80);
if(!http_can_host_php(port:port))exit(0);

foreach dir( make_list_unique( "/dienstplan", http_cgi_dirs( port:port ) ) ) {

  if( dir == "/" ) dir = "";

  url = string(dir, "/?page=login&action=about");
  req = http_get(item:url, port:port);
  res = http_keepalive_send_recv(port:port, data:req);

  if("Dienstplan" >!< res) continue;
  version = eregmatch(pattern:"Dienstplan Version ([0-9.]+)", string: res);
  if(isnull(version[1])) continue;

  if(version_is_less(version:version[1], test_version:"2.3")) {
    report = report_fixed_ver( installed_version:version[1], fixed_version:"2.3" );
    security_message( port:port, data:report );
    exit( 0 );
  }
}

exit( 99 );