NewStart CGSL CORE 5.04 / MAIN 5.04 : firefox Multiple Vulnerabilities (NS-SA-2020-0026)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2020-0026. The text
# itself is copyright (C) ZTE, Inc.

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(136906);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2020-6796", "CVE-2020-6798", "CVE-2020-6800");

  script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : firefox Multiple Vulnerabilities (NS-SA-2020-0026)");

  script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has firefox packages installed that are affected
by multiple vulnerabilities:

  - A content process could have modified shared memory
    relating to crash reporting information, crash itself,
    and cause an out-of-bound write. This could have caused
    memory corruption and a potentially exploitable crash.
    This vulnerability affects Firefox < 73 and Firefox <
    ESR68.5. (CVE-2020-6796)

  - If a template tag was used in a select tag, the parser
    could be confused and allow JavaScript parsing and
    execution when it should not be allowed. A site that
    relied on the browser behaving correctly could suffer a
    cross-site scripting vulnerability as a result. In
    general, this flaw cannot be exploited through email in
    the Thunderbird product because scripting is disabled
    when reading mail, but is potentially a risk in browser
    or browser-like contexts. This vulnerability affects
    Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
    (CVE-2020-6798)

  - Mozilla developers and community members reported memory
    safety bugs present in Firefox 72 and Firefox ESR 68.4.
    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. In
    general, these flaws cannot be exploited through email
    in the Thunderbird product because scripting is disabled
    when reading mail, but are potentially risks in browser
    or browser-like contexts. This vulnerability affects
    Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
    (CVE-2020-6800)

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:"http://security.gd-linux.com/notice/NS-SA-2020-0026");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL firefox packages. Note that updated packages may not be available yet. Please contact ZTE
for more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:R/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-2020-6800");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"NewStart CGSL Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  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/ZTE-CGSL/release");
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux");

if (release !~ "CGSL CORE 5.04" &&
    release !~ "CGSL MAIN 5.04")
  audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.04 / NewStart CGSL MAIN 5.04');

if (!get_kb_item("Host/ZTE-CGSL/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, "NewStart Carrier Grade Server Linux", cpu);

flag = 0;

pkgs = {
  "CGSL CORE 5.04": [
    "firefox-68.5.0-2.el7.centos",
    "firefox-debuginfo-68.5.0-2.el7.centos"
  ],
  "CGSL MAIN 5.04": [
    "firefox-68.5.0-2.el7.centos",
    "firefox-debuginfo-68.5.0-2.el7.centos"
  ]
};
pkg_list = pkgs[release];

foreach (pkg in pkg_list)
  if (rpm_check(release:"ZTE " + release, reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "firefox");
}