Vulnerabilities > CVE-2020-12394 - Unspecified vulnerability in Mozilla Firefox

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 202005-04.
#
# 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(136541);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/31");

  script_cve_id(
    "CVE-2020-12387",
    "CVE-2020-12392",
    "CVE-2020-12394",
    "CVE-2020-12395",
    "CVE-2020-12396",
    "CVE-2020-6831"
  );
  script_xref(name:"GLSA", value:"202005-04");
  script_xref(name:"IAVA", value:"2020-A-0190-S");

  script_name(english:"GLSA-202005-04 : Mozilla Firefox: 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-202005-04
(Mozilla Firefox: Multiple vulnerabilities)

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

    A remote attacker could entice a user to view a specially crafted web
      page, possibly resulting in the execution of arbitrary code with the
      privileges of the process, an information leak or a Denial of Service
      condition.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(attribute:"see_also", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2020-17/");
  script_set_attribute(attribute:"see_also", value:"https://security.gentoo.org/glsa/202005-04");
  script_set_attribute(
    attribute:"solution",
    value:
"All Mozilla Firefox users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=www-client/firefox-68.8.0'
    All Mozilla Firefox binary users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=www-client/firefox-bin-68.8.0'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:"cvss_score_source", value:"CVE-2020-12395");
  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:gentoo:linux:firefox");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:firefox-bin");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/13");
  script_set_attribute(attribute:"stig_severity", value:"II");
  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:"www-client/firefox-bin", unaffected:make_list("ge 68.8.0"), vulnerable:make_list("lt 68.8.0"))) flag++;
if (qpkg_check(package:"www-client/firefox", unaffected:make_list("ge 68.8.0"), vulnerable:make_list("lt 68.8.0"))) 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, "Mozilla Firefox");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4353-1. 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(136420);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/31");

  script_cve_id(
    "CVE-2020-12387",
    "CVE-2020-12390",
    "CVE-2020-12391",
    "CVE-2020-12392",
    "CVE-2020-12394",
    "CVE-2020-12395",
    "CVE-2020-12396",
    "CVE-2020-6831"
  );
  script_xref(name:"USN", value:"4353-1");
  script_xref(name:"IAVA", value:"2020-A-0190-S");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 19.10 / 20.04 : firefox vulnerabilities (USN-4353-1)");
  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, bypass
security restrictions, spoof the URL bar, or execute arbitrary code.
(CVE-2020-6831, CVE-2020-12387, CVE-2020-12390, CVE-2020-12391,
CVE-2020-12394, CVE-2020-12395, CVE-2020-12396)

It was discovered that the Devtools' 'Copy as cURL' feature did
not properly HTTP POST data of a request. If a user were tricked in to
using the 'Copy as cURL' feature to copy and paste a command with
specially crafted data in to a terminal, an attacker could potentially
exploit this to obtain sensitive information from local files.
(CVE-2020-12392).

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/4353-1/");
  script_set_attribute(
    attribute:"solution",
    value:"Update the affected firefox package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:"cvss_score_source", value:"CVE-2020-12395");
  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: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:19.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/08");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 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\.10|20\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04 / 18.04 / 19.10 / 20.04", "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:"76.0+build2-0ubuntu0.16.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"firefox", pkgver:"76.0+build2-0ubuntu0.18.04.1")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"firefox", pkgver:"76.0+build2-0ubuntu0.19.10.1")) flag++;
if (ubuntu_check(osver:"20.04", pkgname:"firefox", pkgver:"76.0+build2-0ubuntu0.20.04.1")) 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");
}

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


# The descriptive text and package checks in this plugin were
# extracted from Mozilla Foundation Security Advisory mfsa2020-16.
# The text itself is copyright (C) Mozilla Foundation.

include('compat.inc');

if (description)
{
  script_id(136404);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/31");

  script_cve_id(
    "CVE-2020-6831",
    "CVE-2020-12387",
    "CVE-2020-12388",
    "CVE-2020-12389",
    "CVE-2020-12390",
    "CVE-2020-12391",
    "CVE-2020-12392",
    "CVE-2020-12393",
    "CVE-2020-12394",
    "CVE-2020-12395",
    "CVE-2020-12396"
  );
  script_xref(name:"MFSA", value:"2020-16");
  script_xref(name:"IAVA", value:"2020-A-0190-S");

  script_name(english:"Mozilla Firefox < 76.0");

  script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Firefox installed on the remote Windows host is prior to 76.0. It is, therefore, affected by multiple
vulnerabilities as referenced in the mfsa2020-16 advisory.

  - A race condition when running shutdown code for Web
    Worker led to a use-after-free vulnerability. This
    resulted in a potentially exploitable crash.
    (CVE-2020-12387)

  - The Firefox content processes did not sufficiently
    lockdown access control which could result in a sandbox
    escape.Note: this issue only affects Firefox on
    Windows operating systems. (CVE-2020-12388,
    CVE-2020-12389)

  - A buffer overflow could occur when parsing and
    validating SCTP chunks in WebRTC. This could have led to
    memory corruption and a potentially exploitable crash.
    (CVE-2020-6831)

  - Incorrect origin serialization of URLs with IPv6
    addresses could lead to incorrect security checks
    (CVE-2020-12390)

  - Documents formed using data: URLs in an
    object element failed to inherit the CSP of
    the creating context. This allowed the execution of
    scripts that should have been blocked, albeit with a
    unique opaque origin. (CVE-2020-12391)

  - The 'Copy as cURL' feature of Devtools' network tab did
    not properly escape the HTTP POST data of a request,
    which can be controlled by the website. If a user used
    the 'Copy as cURL' feature and pasted the command into a
    terminal, it could have resulted in the disclosure of
    local files. (CVE-2020-12392)

  - The 'Copy as cURL' feature of Devtools' network tab did
    not properly escape the HTTP method of a request, which
    can be controlled by the website. If a user used the
    'Copy as cURL' feature and pasted the command into a
    terminal, it could have resulted in command injection
    and arbitrary command execution.Note: this issue
    only affects Firefox on Windows operating systems.
    (CVE-2020-12393)

  - A logic flaw in our location bar implementation could
    have allowed a local attacker to spoof the current
    location by selecting a different origin and removing
    focus from the input element. (CVE-2020-12394)

  - Mozilla developers and community members Alexandru
    Michis, Jason Kratzer, philipp, Ted Campbell, Bas
    Schouten, Andr Bargull, and Karl Tomlinson reported
    memory safety bugs present in Firefox 75 and Firefox ESR
    68.7. Some of these bugs showed evidence of memory
    corruption and we presume that with enough effort some
    of these could have been exploited to run arbitrary
    code. (CVE-2020-12395)

  - Mozilla developers and community members Frederik Braun,
    Andrew McCreight, C.M.Chang, and Dan Minor reported
    memory safety bugs present in Firefox 75. Some of these
    bugs showed evidence of memory corruption and we presume
    that with enough effort some of these could have been
    exploited to run arbitrary code. (CVE-2020-12396)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2020-16/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox version 76.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:"cvss_score_source", value:"CVE-2020-12395");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("mozilla_org_installed.nasl");
  script_require_keys("Mozilla/Firefox/Version");

  exit(0);
}

include('mozilla_version.inc');

port = get_kb_item("SMB/transport");
if (!port) port = 445;

installs = get_kb_list("SMB/Mozilla/Firefox/*");
if (isnull(installs)) audit(AUDIT_NOT_INST, "Firefox");

mozilla_check_version(installs:installs, product:'firefox', esr:FALSE, fix:'76.0', severity:SECURITY_HOLE);

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4353-2. 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(136545);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/31");

  script_cve_id(
    "CVE-2020-12387",
    "CVE-2020-12390",
    "CVE-2020-12391",
    "CVE-2020-12392",
    "CVE-2020-12394",
    "CVE-2020-12395",
    "CVE-2020-12396",
    "CVE-2020-6831"
  );
  script_xref(name:"USN", value:"4353-2");
  script_xref(name:"IAVA", value:"2020-A-0190-S");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 19.10 / 20.04 : firefox regression (USN-4353-2)");
  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:
"USN-4353-1 fixed vulnerabilities in Firefox. The update caused a
regression that impaired the functionality of some addons. This update
fixes the problem.

We apologize for the inconvenience.

Original advisory details :

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, bypass
security restrictions, spoof the URL bar, or execute arbitrary code.
(CVE-2020-6831, CVE-2020-12387, CVE-2020-12390, CVE-2020-12391,
CVE-2020-12394, CVE-2020-12395, CVE-2020-12396) It was discovered that
the Devtools' 'Copy as cURL' feature did not properly HTTP POST
data of a request. If a user were tricked in to using the 'Copy as
cURL' feature to copy and paste a command with specially crafted
data in to a terminal, an attacker could potentially exploit this to
obtain sensitive information from local files. (CVE-2020-12392).

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/4353-2/");
  script_set_attribute(
    attribute:"solution",
    value:"Update the affected firefox package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:"cvss_score_source", value:"CVE-2020-12395");
  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: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:19.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/13");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 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\.10|20\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04 / 18.04 / 19.10 / 20.04", "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:"76.0.1+build1-0ubuntu0.16.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"firefox", pkgver:"76.0.1+build1-0ubuntu0.18.04.1")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"firefox", pkgver:"76.0.1+build1-0ubuntu0.19.10.1")) flag++;
if (ubuntu_check(osver:"20.04", pkgname:"firefox", pkgver:"76.0.1+build1-0ubuntu0.20.04.1")) 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");
}

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


# The descriptive text and package checks in this plugin were
# extracted from Mozilla Foundation Security Advisory mfsa2020-16.
# The text itself is copyright (C) Mozilla Foundation.

include('compat.inc');

if (description)
{
  script_id(136403);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/31");

  script_cve_id(
    "CVE-2020-6831",
    "CVE-2020-12387",
    "CVE-2020-12388",
    "CVE-2020-12389",
    "CVE-2020-12390",
    "CVE-2020-12391",
    "CVE-2020-12392",
    "CVE-2020-12393",
    "CVE-2020-12394",
    "CVE-2020-12395",
    "CVE-2020-12396"
  );
  script_xref(name:"MFSA", value:"2020-16");
  script_xref(name:"IAVA", value:"2020-A-0190-S");

  script_name(english:"Mozilla Firefox < 76.0");

  script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Firefox installed on the remote macOS or Mac OS X host is prior to 76.0. It is, therefore, affected by
multiple vulnerabilities as referenced in the mfsa2020-16 advisory.

  - A race condition when running shutdown code for Web
    Worker led to a use-after-free vulnerability. This
    resulted in a potentially exploitable crash.
    (CVE-2020-12387)

  - The Firefox content processes did not sufficiently
    lockdown access control which could result in a sandbox
    escape.Note: this issue only affects Firefox on
    Windows operating systems. (CVE-2020-12388,
    CVE-2020-12389)

  - A buffer overflow could occur when parsing and
    validating SCTP chunks in WebRTC. This could have led to
    memory corruption and a potentially exploitable crash.
    (CVE-2020-6831)

  - Incorrect origin serialization of URLs with IPv6
    addresses could lead to incorrect security checks
    (CVE-2020-12390)

  - Documents formed using data: URLs in an
    object element failed to inherit the CSP of
    the creating context. This allowed the execution of
    scripts that should have been blocked, albeit with a
    unique opaque origin. (CVE-2020-12391)

  - The 'Copy as cURL' feature of Devtools' network tab did
    not properly escape the HTTP POST data of a request,
    which can be controlled by the website. If a user used
    the 'Copy as cURL' feature and pasted the command into a
    terminal, it could have resulted in the disclosure of
    local files. (CVE-2020-12392)

  - The 'Copy as cURL' feature of Devtools' network tab did
    not properly escape the HTTP method of a request, which
    can be controlled by the website. If a user used the
    'Copy as cURL' feature and pasted the command into a
    terminal, it could have resulted in command injection
    and arbitrary command execution.Note: this issue
    only affects Firefox on Windows operating systems.
    (CVE-2020-12393)

  - A logic flaw in our location bar implementation could
    have allowed a local attacker to spoof the current
    location by selecting a different origin and removing
    focus from the input element. (CVE-2020-12394)

  - Mozilla developers and community members Alexandru
    Michis, Jason Kratzer, philipp, Ted Campbell, Bas
    Schouten, Andr Bargull, and Karl Tomlinson reported
    memory safety bugs present in Firefox 75 and Firefox ESR
    68.7. Some of these bugs showed evidence of memory
    corruption and we presume that with enough effort some
    of these could have been exploited to run arbitrary
    code. (CVE-2020-12395)

  - Mozilla developers and community members Frederik Braun,
    Andrew McCreight, C.M.Chang, and Dan Minor reported
    memory safety bugs present in Firefox 75. Some of these
    bugs showed evidence of memory corruption and we presume
    that with enough effort some of these could have been
    exploited to run arbitrary code. (CVE-2020-12396)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2020-16/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox version 76.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:"cvss_score_source", value:"CVE-2020-12395");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("macosx_firefox_installed.nasl");
  script_require_keys("MacOSX/Firefox/Installed");

  exit(0);
}

include('mozilla_version.inc');

kb_base = 'MacOSX/Firefox';
get_kb_item_or_exit(kb_base+'/Installed');

version = get_kb_item_or_exit(kb_base+'/Version', exit_code:1);
path = get_kb_item_or_exit(kb_base+'/Path', exit_code:1);

is_esr = get_kb_item(kb_base+'/is_esr');
if (is_esr) exit(0, 'The Mozilla Firefox installation is in the ESR branch.');

mozilla_check_version(version:version, path:path, product:'firefox', esr:FALSE, fix:'76.0', severity:SECURITY_HOLE);