Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : firefox regression (USN-3477-4)

2018-01-04T00:00:00
ID UBUNTU_USN-3477-4.NASL
Type nessus
Reporter Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-09-02T00:00:00

Description

USN-3477-1 fixed vulnerabilities in Firefox. The update introduced a crash reporting issue where background tab crash reports were sent to Mozilla without user opt-in. This update fixes the problem.

We apologize for the inconvenience.

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, read uninitialized memory, obtain sensitive information, bypass same-origin restrictions, bypass CSP protections, bypass mixed content blocking, spoof the addressbar, or execute arbitrary code. (CVE-2017-7826, CVE-2017-7827, CVE-2017-7828, CVE-2017-7830, CVE-2017-7831, CVE-2017-7832, CVE-2017-7833, CVE-2017-7834, CVE-2017-7835, CVE-2017-7837, CVE-2017-7838, CVE-2017-7842)

It was discovered that javascript: URLs pasted in to the addressbar would be executed instead of being blocked in some circumstances. If a user were tricked in to copying a specially crafted URL in to the addressbar, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2017-7839)

It was discovered that exported bookmarks do not strip script elements from user-supplied tags. If a user were tricked in to adding specially crafted tags to bookmarks, exporting them and then opening the resulting HTML file, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2017-7840).

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.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3477-4. 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(105542);
  script_version("3.7");
  script_cvs_date("Date: 2019/09/18 12:31:47");

  script_cve_id("CVE-2017-7826", "CVE-2017-7827", "CVE-2017-7828", "CVE-2017-7830", "CVE-2017-7831", "CVE-2017-7832", "CVE-2017-7833", "CVE-2017-7834", "CVE-2017-7835", "CVE-2017-7837", "CVE-2017-7838", "CVE-2017-7839", "CVE-2017-7840", "CVE-2017-7842");
  script_xref(name:"USN", value:"3477-4");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : firefox regression (USN-3477-4)");
  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-3477-1 fixed vulnerabilities in Firefox. The update introduced a
crash reporting issue where background tab crash reports were sent to
Mozilla without user opt-in. This update fixes the problem.

We apologize for the inconvenience.

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, read
uninitialized memory, obtain sensitive information, bypass same-origin
restrictions, bypass CSP protections, bypass mixed content blocking,
spoof the addressbar, or execute arbitrary code. (CVE-2017-7826,
CVE-2017-7827, CVE-2017-7828, CVE-2017-7830, CVE-2017-7831,
CVE-2017-7832, CVE-2017-7833, CVE-2017-7834, CVE-2017-7835,
CVE-2017-7837, CVE-2017-7838, CVE-2017-7842)

It was discovered that javascript: URLs pasted in to the
addressbar would be executed instead of being blocked in
some circumstances. If a user were tricked in to copying a
specially crafted URL in to the addressbar, an attacker
could potentially exploit this to conduct cross-site
scripting (XSS) attacks. (CVE-2017-7839)

It was discovered that exported bookmarks do not strip
script elements from user-supplied tags. If a user were
tricked in to adding specially crafted tags to bookmarks,
exporting them and then opening the resulting HTML file, an
attacker could potentially exploit this to conduct
cross-site scripting (XSS) attacks. (CVE-2017-7840).

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/3477-4/"
  );
  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:"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:canonical:ubuntu_linux:firefox");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:17.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:17.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/06/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/01/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/04");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 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:"^(14\.04|16\.04|17\.04|17\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04 / 16.04 / 17.04 / 17.10", "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:"14.04", pkgname:"firefox", pkgver:"57.0.3+build1-0ubuntu0.14.04.1")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"firefox", pkgver:"57.0.3+build1-0ubuntu0.16.04.1")) flag++;
if (ubuntu_check(osver:"17.04", pkgname:"firefox", pkgver:"57.0.3+build1-0ubuntu0.17.04.1")) flag++;
if (ubuntu_check(osver:"17.10", pkgname:"firefox", pkgver:"57.0.3+build1-0ubuntu0.17.10.1")) 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");
}