Ubuntu 16.04 LTS / 18.04 LTS / 18.10 / 19.04 : Firefox vulnerabilities (USN-3991-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3991-1. 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(125339);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/09/17");

  script_cve_id("CVE-2019-11691", "CVE-2019-11692", "CVE-2019-11693", "CVE-2019-11695", "CVE-2019-11696", "CVE-2019-11697", "CVE-2019-11698", "CVE-2019-11699", "CVE-2019-11701", "CVE-2019-7317", "CVE-2019-9800", "CVE-2019-9814", "CVE-2019-9816", "CVE-2019-9817", "CVE-2019-9819", "CVE-2019-9820", "CVE-2019-9821");
  script_xref(name:"USN", value:"3991-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 18.10 / 19.04 : Firefox vulnerabilities (USN-3991-1)");
  script_summary(english:"Checks dpkg output for updated package.");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Ubuntu host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description",
    value:
"Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, spoof the
browser UI, trick the user in to launching local executable binaries,
obtain sensitive information, conduct cross-site scripting (XSS)
attacks, or execute arbitrary code. (CVE-2019-11691, CVE-2019-11692,
CVE-2019-11693, CVE-2019-11695, CVE-2019-11696, CVE-2019-11699,
CVE-2019-11701, CVE-2019-7317, CVE-2019-9800, CVE-2019-9814,
CVE-2019-9817, CVE-2019-9819, CVE-2019-9820, CVE-2019-9821)

It was discovered that pressing certain key combinations could bypass
addon installation prompt delays. If a user opened a specially crafted
website, an attacker could potentially exploit this to trick them in
to installing a malicious extension. (CVE-2019-11697)

It was discovered that history data could be exposed via drag and drop
of hyperlinks to and from bookmarks. If a user were tricked in to
dragging a specially crafted hyperlink to the bookmark toolbar or
sidebar, and subsequently back in to the web content area, an attacker
could potentially exploit this to obtain sensitive information.
(CVE-2019-11698)

A type confusion bug was discovered with object groups and
UnboxedObjects. If a user were tricked in to opening a specially
crafted website after enabling the UnboxedObjects feature, an attacker
could potentially exploit this to bypass security checks.
(CVE-2019-9816).

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/3991-1/"
  );
  script_set_attribute(
    attribute:"solution",
    value:"Update the affected firefox 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: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:canonical:ubuntu_linux:firefox");
  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:18.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/02/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/22");
  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) 2019-2020 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|18\.10|19\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04 / 18.04 / 18.10 / 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:"firefox", pkgver:"67.0+build2-0ubuntu0.16.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"firefox", pkgver:"67.0+build2-0ubuntu0.18.04.1")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"firefox", pkgver:"67.0+build2-0ubuntu0.18.10.1")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"firefox", pkgver:"67.0+build2-0ubuntu0.19.04.1")) 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, "firefox");
}