Vulnerabilities > CVE-2006-4023 - SQL-Injection vulnerability in PHP 4.3.3/5.0.2/5.1.4

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
low complexity
php
nessus
NVD
Published: 2006-08-09
Updated: 2018-10-17

Summary

The ip2long function in PHP 5.1.4 and earlier may incorrectly validate an arbitrary string and return a valid network IP address, which allows remote attackers to obtain network information and facilitate other attacks, as demonstrated using SQL injection in the X-FORWARDED-FOR Header in index.php in MiniBB 2.0. NOTE: it could be argued that the ip2long behavior represents a risk for security-relevant issues in a way that is similar to strcpy's role in buffer overflows, in which case this would be a class of implementation bugs that would require separate CVE items for each PHP application that uses ip2long in a security-relevant manner.

Vulnerable Configurations

Part Description Count
Application
Php
3

Nessus

NASL familyCGI abuses
NASL idPHP_IP2LONG_SQL_INJECTION.NASL
descriptionAccording to its banner, the
last seen2020-05-03
modified2011-11-18
plugin id17715
published2011-11-18
reporterThis script is Copyright (C) 2011-2020 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/17715
titlePHP ip2long Function String Validation Weakness
code
#
# (C) Tenable Network Security, Inc.
#

include('compat.inc');

if (description)
{
  script_id(17715);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/30");

  script_cve_id("CVE-2006-4023");

  script_name(english:"PHP ip2long Function String Validation Weakness");
 
  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote web server uses a version of PHP that does not properly
validate user strings."
  );
  script_set_attribute(
    attribute:"description",
    value:
"According to its banner, the 'ip2long()' function in the version of
PHP installed on the remote host may incorrectly validate an arbitrary
string and return a valid network IP address."
  );
 # https://web.archive.org/web/20141122094639/http://retrogod.altervista.org/php_ip2long.htm
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3f88768a");
  script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/441529/100/100/threaded");
  script_set_attribute(attribute:"solution", value:"Upgrade to PHP version 5.1.5 or later.");
  
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2006-4023");

  script_set_attribute(attribute:"vuln_publication_date", value:"2006/07/29");
  script_set_attribute(attribute:"patch_publication_date",value:"2006/08/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/11/18");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:php:php");
  script_end_attributes();
 
  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2011-2020 Tenable Network Security, Inc.");

  script_dependencies("php_version.nasl");
  script_require_ports("Services/www", 80);
  script_require_keys("www/PHP", "Settings/PCI_DSS", "installed_sw/PHP");
  exit(0);
}

include('http.inc');
include('vcf.inc');

# Only PCI considers this an issue.
if (!get_kb_item('Settings/PCI_DSS')) audit(AUDIT_PCI);

port = get_http_port(default:80, php:TRUE);
app_info = vcf::get_app_info(app:'PHP', port:port, webapp:TRUE);

backported = get_kb_item('www/php/' + port + '/' + app_info.version + '/backported');

if ((report_paranoia < 2) && backported) audit(AUDIT_BACKPORT_SERVICE, port, 'PHP ' + app_info.version + ' install');

constraints = [ {'min_version':'4.0.0alpha1', 'fixed_version':'5.1.5'} ];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);

References