RHEL 6 : chromium-browser (RHSA-2018:0484)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2018:0484. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('compat.inc');

if (description)
{
  script_id(108275);
  script_version("1.16");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/11/05");

  script_cve_id(
    "CVE-2018-6057",
    "CVE-2018-6060",
    "CVE-2018-6061",
    "CVE-2018-6062",
    "CVE-2018-6063",
    "CVE-2018-6064",
    "CVE-2018-6065",
    "CVE-2018-6066",
    "CVE-2018-6067",
    "CVE-2018-6069",
    "CVE-2018-6070",
    "CVE-2018-6071",
    "CVE-2018-6072",
    "CVE-2018-6073",
    "CVE-2018-6074",
    "CVE-2018-6075",
    "CVE-2018-6076",
    "CVE-2018-6077",
    "CVE-2018-6078",
    "CVE-2018-6079",
    "CVE-2018-6080",
    "CVE-2018-6081",
    "CVE-2018-6082",
    "CVE-2018-6083"
  );
  script_xref(name:"RHSA", value:"2018:0484");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/06/22");

  script_name(english:"RHEL 6 : chromium-browser (RHSA-2018:0484)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for chromium-browser.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 6 host has a package installed that is affected by multiple vulnerabilities as
referenced in the RHSA-2018:0484 advisory.

    Chromium is an open-source web browser, powered by WebKit (Blink).

    This update upgrades Chromium to version 65.0.3325.146.

    Security Fix(es):

    * chromium-browser: incorrect permissions on shared memory (CVE-2018-6057)

    * chromium-browser: use-after-free in blink (CVE-2018-6060)

    * chromium-browser: race condition in v8 (CVE-2018-6061)

    * chromium-browser: heap buffer overflow in skia (CVE-2018-6062)

    * chromium-browser: incorrect permissions on shared memory (CVE-2018-6063)

    * chromium-browser: type confusion in v8 (CVE-2018-6064)

    * chromium-browser: integer overflow in v8 (CVE-2018-6065)

    * chromium-browser: same origin bypass via canvas (CVE-2018-6066)

    * chromium-browser: buffer overflow in skia (CVE-2018-6067)

    * chromium-browser: stack buffer overflow in skia (CVE-2018-6069)

    * chromium-browser: csp bypass through extensions (CVE-2018-6070)

    * chromium-browser: heap bufffer overflow in skia (CVE-2018-6071)

    * chromium-browser: integer overflow in pdfium (CVE-2018-6072)

    * chromium-browser: heap bufffer overflow in webgl (CVE-2018-6073)

    * chromium-browser: mark-of-the-web bypass (CVE-2018-6074)

    * chromium-browser: overly permissive cross origin downloads (CVE-2018-6075)

    * chromium-browser: incorrect handling of url fragment identifiers in blink (CVE-2018-6076)

    * chromium-browser: timing attack using svg filters (CVE-2018-6077)

    * chromium-browser: url spoof in omnibox (CVE-2018-6078)

    * chromium-browser: information disclosure via texture data in webgl (CVE-2018-6079)

    * chromium-browser: information disclosure in ipc call (CVE-2018-6080)

    * chromium-browser: xss in interstitials (CVE-2018-6081)

    * chromium-browser: circumvention of port blocking (CVE-2018-6082)

    * chromium-browser: incorrect processing of appmanifests (CVE-2018-6083)

    For more details about the security issue(s), including the impact, a CVSS score, and other related
    information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2018/rhsa-2018_0484.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bbab50d3");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2018:0484");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552476");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552477");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552478");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552479");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552480");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552481");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552482");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552483");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552484");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552486");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552487");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552488");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552489");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552490");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552491");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552492");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552493");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552494");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552495");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552496");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552497");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552498");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552499");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1552500");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL chromium-browser package based on the guidance in RHSA-2018:0484.");
  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:H/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:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-6083");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/11/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:chromium-browser");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2018-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("redhat_repos.nasl", "ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '6')) audit(AUDIT_OS_NOT, 'Red Hat 6.x', 'Red Hat ' + os_ver);

if (!get_kb_item('Host/RedHat/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, 'Red Hat', cpu);

var constraints = [
  {
    'repo_relative_urls': [
      'content/dist/rhel/client/6/6Client/i386/supplementary/debug',
      'content/dist/rhel/client/6/6Client/i386/supplementary/os',
      'content/dist/rhel/client/6/6Client/i386/supplementary/source/SRPMS',
      'content/dist/rhel/client/6/6Client/x86_64/supplementary/debug',
      'content/dist/rhel/client/6/6Client/x86_64/supplementary/os',
      'content/dist/rhel/client/6/6Client/x86_64/supplementary/source/SRPMS',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/supplementary/debug',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/supplementary/os',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/supplementary/source/SRPMS',
      'content/dist/rhel/server/6/6Server/i386/supplementary/debug',
      'content/dist/rhel/server/6/6Server/i386/supplementary/os',
      'content/dist/rhel/server/6/6Server/i386/supplementary/source/SRPMS',
      'content/dist/rhel/server/6/6Server/x86_64/supplementary/debug',
      'content/dist/rhel/server/6/6Server/x86_64/supplementary/os',
      'content/dist/rhel/server/6/6Server/x86_64/supplementary/source/SRPMS',
      'content/dist/rhel/workstation/6/6Workstation/i386/supplementary/debug',
      'content/dist/rhel/workstation/6/6Workstation/i386/supplementary/os',
      'content/dist/rhel/workstation/6/6Workstation/i386/supplementary/source/SRPMS',
      'content/dist/rhel/workstation/6/6Workstation/x86_64/supplementary/debug',
      'content/dist/rhel/workstation/6/6Workstation/x86_64/supplementary/os',
      'content/dist/rhel/workstation/6/6Workstation/x86_64/supplementary/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'chromium-browser-65.0.3325.146-2.el6_9', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
      {'reference':'chromium-browser-65.0.3325.146-2.el6_9', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
  foreach var pkg ( constraint_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;
    var exists_check = NULL;
    var cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        _release &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
        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, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'chromium-browser');
}