Vulnerabilities > CVE-2019-14232 - Resource Exhaustion vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2019-647f74ce51.
#

include("compat.inc");

if (description)
{
  script_id(127936);
  script_version("1.3");
  script_cvs_date("Date: 2020/01/02");

  script_cve_id("CVE-2019-14232", "CVE-2019-14233", "CVE-2019-14234", "CVE-2019-14235");
  script_xref(name:"FEDORA", value:"2019-647f74ce51");

  script_name(english:"Fedora 30 : python-django (2019-647f74ce51)");
  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:
"fixes for CVE-2019-14232 to 14235

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
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://bodhi.fedoraproject.org/updates/FEDORA-2019-647f74ce51"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected python-django package."
  );
  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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  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:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:python-django");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:30");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/08/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/08/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/20");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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 = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^30([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 30", "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:"FC30", reference:"python-django-2.1.11-1.fc30")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "python-django");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4084-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(127801);
  script_version("1.5");
  script_cvs_date("Date: 2020/01/02");

  script_cve_id("CVE-2019-14232", "CVE-2019-14233", "CVE-2019-14234", "CVE-2019-14235");
  script_xref(name:"USN", value:"4084-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 19.04 : python-django vulnerabilities (USN-4084-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was discovered that Django incorrectly handled the Truncator
function. A remote attacker could possibly use this issue to cause
Django to consume resources, leading to a denial of service.
(CVE-2019-14232)

It was discovered that Django incorrectly handled the strip_tags
function. A remote attacker could possibly use this issue to cause
Django to consume resources, leading to a denial of service.
(CVE-2019-14233)

It was discovered that Django incorrectly handled certain lookups in
the PostgreSQL support. A remote attacker could possibly use this
issue to perform SQL injection attacks. (CVE-2019-14234)

It was discovered that Django incorrectly handled certain invalid
UTF-8 octet sequences. A remote attacker could possibly use this issue
to cause Django to consume resources, leading to a denial of service.
(CVE-2019-14235).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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://usn.ubuntu.com/4084-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected python-django and / or python3-django packages."
  );
  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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  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:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-django");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3-django");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/08/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/08/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2019-2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(16\.04|18\.04|19\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04 / 18.04 / 19.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"16.04", pkgname:"python-django", pkgver:"1.8.7-1ubuntu5.10")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"python3-django", pkgver:"1.8.7-1ubuntu5.10")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"python-django", pkgver:"1:1.11.11-1ubuntu1.5")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"python3-django", pkgver:"1:1.11.11-1ubuntu1.5")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"python-django", pkgver:"1:1.11.20-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"python3-django", pkgver:"1:1.11.20-1ubuntu0.2")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "python-django / python3-django");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1872-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(127481);
  script_version("1.1");
  script_cvs_date("Date: 2019/08/12 17:35:29");

  script_name(english:"Debian DLA-1872-1 : python-django 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:
"It was discovered that there were two vulnerabilities in the Django
web development framework :

  - CVE-2019-14232: Prevent a possible denial of service in
    django.utils.text.Truncator.

    If django.utils.text.Truncator's chars() and words()
    methods were passed the html=True argument, they were
    extremely slow to evaluate certain inputs due to a
    catastrophic backtracking vulnerability in a regular
    expression. The chars() and words() methods are used to
    implement the truncatechars_html and truncatewords_html
    template filters, which were thus vulnerable.

    The regular expressions used by Truncator have been
    simplified in order to avoid potential backtracking
    issues. As a consequence, trailing punctuation may now
    at times be included in the truncated output.

  - CVE-2019-14233: Prevent a possible denial of service in
    strip_tags().

    Due to the behavior of the underlying HTMLParser,
    django.utils.html.strip_tags() would be extremely slow
    to evaluate certain inputs containing large sequences of
    nested incomplete HTML entities. The strip_tags() method
    is used to implement the corresponding striptags
    template filter, which was thus also vulnerable.

    strip_tags() now avoids recursive calls to HTMLParser
    when progress removing tags, but necessarily incomplete
    HTML entities, stops being made.

    Remember that absolutely NO guarantee is provided about
    the results of strip_tags() being HTML safe. So NEVER
    mark safe the result of a strip_tags() call without
    escaping it first, for example with
    django.utils.html.escape().

For Debian 8 'Jessie', these has been fixed in python-django version
1.7.11-1+deb8u7.

We recommend that you upgrade your python-django packages. You can
find more information in upstream's announcement :

https://www.djangoproject.com/weblog/2019/aug/01/security-releases/

Thanks to Carlton Gibson et al. for their handling of these issues.

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/2019/08/msg00005.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/python-django"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.djangoproject.com/weblog/2019/aug/01/security-releases/"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_attribute(attribute:"risk_factor", value:"High");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-django");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-django-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-django-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-django");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/08/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/08/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 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:"8.0", prefix:"python-django", reference:"1.7.11-1+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"python-django-common", reference:"1.7.11-1+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"python-django-doc", reference:"1.7.11-1+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"python3-django", reference:"1.7.11-1+deb8u7")) flag++;

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

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 202004-17.
#
# The advisory text is Copyright (C) 2001-2020 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(136216);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/07");

  script_cve_id("CVE-2019-12308", "CVE-2019-14232", "CVE-2019-14233", "CVE-2019-14234", "CVE-2019-14235", "CVE-2019-19118", "CVE-2019-19844", "CVE-2020-7471", "CVE-2020-9402");
  script_xref(name:"GLSA", value:"202004-17");

  script_name(english:"GLSA-202004-17 : Django: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-202004-17
(Django: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Django. Please review
      the CVE identifiers referenced below for details.
  
Impact :

    A remote attacker, by sending specially crafted input, could possibly
      cause a Denial of Service condition, or alter the database.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/202004-17"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All Django users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=dev-python/django-2.2.11'"
  );
  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:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:django");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/01");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

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

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"dev-python/django", unaffected:make_list("ge 2.2.11"), vulnerable:make_list("lt 2.2.11"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Django");
}