Advanced Guestbook index.php SQL Injection Vulnerability

# SPDX-FileCopyrightText: 2005 Josh Zlatin-Amishav
# 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("1.3.6.1.4.1.25623.1.0.18217");
  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_cve_id("CVE-2005-1548");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/13548");
  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("Advanced Guestbook index.php SQL Injection Vulnerability");
  script_category(ACT_ATTACK);
  script_family("Web application abuses");
  script_copyright("Copyright (C) 2005 Josh Zlatin-Amishav");
  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:"Update to the newest version of this software.");

  script_tag(name:"summary", value:"Advanced Guestbook is prone to an input validation
  flaw leading to an SQL injection vulnerability.");

  script_tag(name:"impact", value:"An attacker may exploit this flaw to execute arbitrary
  commands against the remote database.");

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

  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("/", http_cgi_dirs(port:port))) {

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

  res = http_get_cache(item:dir + "/index.php", port:port);
  if(!res || res !~ "proxy2\.de.+>Advanced Guestbook<")
    continue;

  url = dir + "/index.php?entry='";

  if(http_vuln_check(port:port, url:url, pattern:"You have an error in your SQL syntax", extra_check:"Query Error")) {
    report = http_report_vuln_url(port:port, url:url);
    security_message(port:port, data:report);
    exit(0);
  }
}

exit(99);