PHP 7.0.x < 7.0.32 Transfer-Encoding Parameter XSS Vulnerability

2018-09-14T00:00:00
ID PHP_7_0_32.NASL
Type nessus
Reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-07-02T00:00:00

Description

According to its banner, the version of PHP running on the remote web server is 7.0.x prior to 7.0.32. It is, therefore, affected by a cross-site scripting vulnerability. An attacker could leverage this vulnerability to inject malicious code which executes within the security context of the affected site.

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

include("compat.inc");

if (description)
{
  script_id(117498);
  script_version("1.7");
  script_cvs_date("Date: 2019/11/01");

  script_cve_id("CVE-2018-17082");

  script_name(english:"PHP 7.0.x < 7.0.32 Transfer-Encoding Parameter XSS Vulnerability");
  script_summary(english:"Checks the version of PHP.");

  script_set_attribute(attribute:"synopsis", value:
"The version of PHP running on the remote web server is affected by
a cross-site scripting vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its banner, the version of PHP running on the remote web
server is 7.0.x prior to 7.0.32. It is, therefore, affected by a
cross-site scripting vulnerability. An attacker could leverage this
vulnerability to inject malicious code which executes within the
security context of the affected site.");
  script_set_attribute(attribute:"see_also", value:"http://php.net/ChangeLog-7.php#7.0.32");
  script_set_attribute(attribute:"see_also", value:"https://bugs.php.net/bug.php?id=76582");
  script_set_attribute(attribute:"solution", value:
"Upgrade to PHP version 7.0.32 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-17082");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/09/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/14");

  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) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("php_version.nasl", "apache_http_version.nasl");
  script_require_keys("www/PHP", "installed_sw/Apache");
  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");

get_install_count(app_name:"Apache", exit_if_zero:TRUE);
port = get_http_port(default:80, php:TRUE);

php = get_php_from_kb(
  port : port,
  exit_on_fail : TRUE
);

version = php["ver"];
source = php["src"];

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

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


# Check that it is the correct version of PHP
if (version =~ "^7(\.0)?$") audit(AUDIT_VER_NOT_GRANULAR, "PHP", port, version);
if (version !~ "^7\.0\.") audit(AUDIT_NOT_DETECT, "PHP version 7.0.x", port);

fix = "7.0.32";
if (ver_compare(ver:version, fix:fix, strict:FALSE) < 0)
{
  report =
    '\n  Version source    : ' + source +
    '\n  Installed version : ' + version +
    '\n  Fixed version     : ' + fix +
    '\n';
  security_report_v4(port:port, extra:report, severity:SECURITY_WARNING, xss:TRUE );
}
else audit(AUDIT_LISTEN_NOT_VULN, "PHP", port, version);