CentOS 7 : firefox (RHSA-2021:0290)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2021:0290.
##

include('compat.inc');

if (description)
{
  script_id(208615);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/10/09");

  script_cve_id(
    "CVE-2020-26976",
    "CVE-2021-23953",
    "CVE-2021-23954",
    "CVE-2021-23960",
    "CVE-2021-23964"
  );
  script_xref(name:"IAVA", value:"2020-A-0575-S");
  script_xref(name:"IAVA", value:"2021-A-0051-S");
  script_xref(name:"RHSA", value:"2021:0290");

  script_name(english:"CentOS 7 : firefox (RHSA-2021:0290)");

  script_set_attribute(attribute:"synopsis", value:
"The remote CentOS Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote CentOS Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the
RHSA-2021:0290 advisory.

  - When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former,
    the service worker could have intercepted the request for the secure page despite the iframe not being a
    secure context due to the (insecure) framing. This vulnerability affects Firefox < 84. (CVE-2020-26976)

  - If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-
    origin information, when said information is served as chunked data. This vulnerability affects Firefox <
    85, Thunderbird < 78.7, and Firefox ESR < 78.7. (CVE-2021-23953)

  - Using the new logical assignment operators in a JavaScript switch statement could have caused a type
    confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects
    Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7. (CVE-2021-23954)

  - Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a
    potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox
    ESR < 78.7. (CVE-2021-23960)

  - Mozilla developers reported memory safety bugs present in Firefox 84 and Firefox ESR 78.6. 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. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and
    Firefox ESR < 78.7. (CVE-2021-23964)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2021:0290");
  script_set_attribute(attribute:"solution", value:
"Update the affected firefox package.");
  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-2021-23964");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/01/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/01/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/10/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:firefox");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('rpm.inc');
include('rhel.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/CentOS/release');
if (isnull(os_release) || 'CentOS' >!< os_release) audit(AUDIT_OS_NOT, 'CentOS');
var os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '7')) audit(AUDIT_OS_NOT, 'CentOS 7.x', 'CentOS ' + os_ver);

if (!get_kb_item('Host/CentOS/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'CentOS', cpu);

var pkgs = [
    {'reference':'firefox-78.7.0-2.el7.centos', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
    {'reference':'firefox-78.7.0-2.el7.centos', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (reference && _release) {
    if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'firefox');
}