Vulnerabilities > CVE-2015-5714 - Cross-site Scripting vulnerability in Wordpress

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

include("compat.inc");

if (description)
{
  script_id(85985);
  script_version("1.10");
  script_cvs_date("Date: 2019/11/25");

  script_cve_id("CVE-2015-5714", "CVE-2015-5715", "CVE-2015-7989");
  script_bugtraq_id(76744, 76745, 76748);

  script_name(english:"WordPress < 4.3.1 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of WordPress.");

  script_set_attribute(attribute:"synopsis", value:
"The PHP application running on the remote web server is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its version number, the WordPress application running on
the remote web server is prior to 4.3.1. It is, therefore, potentially
affected by multiple vulnerabilities :

  - A cross-site scripting vulnerability exists when
    processing shortcode tags due to improper validation of
    user-supplied input. An attacker can exploit this, via a
    specially crafted request, to execute arbitrary script
    code in a user's browser session. (CVE-2015-5714)

  - An unspecified vulnerability exists that allows an
    authenticated attacker to publish private posts and make
    them 'sticky'. (CVE-2015-5715)

  - An unspecified cross-site scripting vulnerability exists
    in the user list table. An attacker can exploit this,
    via a specially crafted request, to execute arbitrary
    script code in a user's browser session.

Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"https://codex.wordpress.org/Version_4.3.1");
  script_set_attribute(attribute:"see_also", value:"https://wordpress.org/news/2015/09/wordpress-4-3-1/");
  # https://blog.checkpoint.com/2015/09/15/finding-vulnerabilities-in-core-wordpress-a-bug-hunters-trilogy-part-iii-ultimatum/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6d060592");
  script_set_attribute(attribute:"solution", value:
"Upgrade to WordPress 4.3.1 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-2015-5714");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/09/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/09/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/09/17");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:wordpress:wordpress");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("wordpress_detect.nasl");
  script_require_keys("www/PHP", "installed_sw/WordPress", "Settings/ParanoidReport");
  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 = "WordPress";
get_install_count(app_name:app, exit_if_zero:TRUE);
if (report_paranoia < 2) audit(AUDIT_PARANOID);

port = get_http_port(default:80, php:TRUE);

install = get_single_install(
  app_name : app,
  port     : port,
  exit_if_unknown_ver : TRUE
);

dir = install['path'];
version = install['version'];
install_url = build_url(port:port, qs:dir);

ver = split(version, sep:".", keep:FALSE);
for (i=0; i<max_index(ver); i++)
  ver[i] = int(ver[i]);

# All versions of WordPress prior to 4.3.1 are vulnerable
# and according to the release archive 4.2.5, 4.3.1 and
# in the 4.x range, to date. WordPress claims that the
# archive in the link below is a comprehensive list of
# every release that they know of, on record.
# https://wordpress.org/download/release-archive/
# Contains all of the release dates:
# https://codex.wordpress.org/WordPress_Versions

if(
  (ver[0] < 3) ||
  # Patches were backported into unsupported versions
  # 3.7.x - 3.9.x
  (ver[0] == 3 && ver[1] < 7) ||
  (ver[0] == 3 && ver[1] == 7 && ver[2] < 11) ||
  (ver[0] == 3 && ver[1] == 8 && ver[2] < 11) ||
  (ver[0] == 3 && ver[1] == 9 && ver[2] < 9) ||
  # 4.0.x - 4.3.x
  (ver[0] == 4 && ver[1] == 0 && ver[2] < 8) ||
  (ver[0] == 4 && ver[1] == 1 && ver[2] < 8) ||
  (ver[0] == 4 && ver[1] == 2 && ver[2] < 5) ||
  (ver[0] == 4 && ver[1] == 3 && ver[2] < 1)
  )
{
  set_kb_item(name:'www/'+port+'/XSS', value:TRUE);

  if (report_verbosity > 0)
  {
    report =
      '\n  URL               : ' + install_url +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : 4.3.1' +
      '\n';
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
}
else audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url, version);

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-321-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(86213);
  script_version("2.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2015-5714", "CVE-2015-5715");

  script_name(english:"Debian DLA-321-1 : wordpress security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Various security issue have been fixed in the Debian LTS (squeeze)
version of the Wordpress content management system.

CVE-2015-5714

A cross-site scripting vulnerability when processing shortcode tags
has been discovered.

The issue has been fixed by not allowing unclosed HTML
elements in attributes.

CVE-2015-5715

A vulnerability has been discovered, allowing users without proper
permissions to publish private posts and make them sticky.

The issue has been fixed in the XMLRPC code of Wordpress by
not allowing private posts to be sticky.

Other issue(s)

A cross-site scripting vulnerability in user list tables has been
discovered.

The issue has been fixed by URL-escaping email addresses in
those user lists.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2015/09/msg00018.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze-lts/wordpress"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Upgrade the affected wordpress, and wordpress-l10n packages."
  );
  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:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:wordpress");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:wordpress-l10n");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/09/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/10/01");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"6.0", prefix:"wordpress", reference:"3.6.1+dfsg-1~deb6u8")) flag++;
if (deb_check(release:"6.0", prefix:"wordpress-l10n", reference:"3.6.1+dfsg-1~deb6u8")) flag++;

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

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2015-15982.
#

include("compat.inc");

if (description)
{
  script_id(86165);
  script_version("2.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2015-5714", "CVE-2015-5715");
  script_xref(name:"FEDORA", value:"2015-15982");

  script_name(english:"Fedora 21 : wordpress-4.3.1-1.fc21 (2015-15982)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"**WordPress 4.3.1 Security and Maintenance Release** [Upstream
announcement](https://wordpress.org/news/2015/09/wordpress-4-3-1/):
WordPress 4.3.1 is now available. This is a security release for all
previous versions and we strongly encourage you to update your sites
immediately. This release addresses three issues, including two
cross-site scripting vulnerabilities and a potential privilege
escalation. * WordPress versions 4.3 and earlier are vulnerable to a
cross-site scripting vulnerability when processing shortcode tags
(CVE-2015-5714). Reported by Shahar Tal and Netanel Rubin of Check
Point. * A separate cross-site scripting vulnerability was found in
the user list table. Reported by Ben Bidner of the WordPress security
team. * Finally, in certain cases, users without proper permissions
could publish private posts and make them sticky (CVE-2015-5715).
Reported by Shahar Tal and Netanel Rubin of Check Point. WordPress
4.3.1 also fixes twenty-six bugs. For more information, see the
[release notes](https://codex.wordpress.org/Version_4.3.1) or consult
the [list of
changes](https://core.trac.wordpress.org/log/branches/4.3/?rev=34199&s
t op_rev=33647).

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1263657"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://codex.wordpress.org/Version_4.3.1"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://core.trac.wordpress.org/log/branches/4.3/?rev=34199&st"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2015-September/167729.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?0d9c1093"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://wordpress.org/news/2015/09/wordpress-4-3-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected wordpress package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:wordpress");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:21");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/09/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/09/28");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2020 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^21([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 21.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC21", reference:"wordpress-4.3.1-1.fc21")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "wordpress");
}