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nessusThis script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.REDHAT-RHSA-2020-2643.NASL
HistoryJun 22, 2020 - 12:00 a.m.

RHEL 6 : chromium-browser (RHSA-2020:2643)

2020-06-2200:00:00
This script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
14

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

9.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

0.944 High

EPSS

Percentile

99.2%

The remote Redhat Enterprise Linux 6 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:2643 advisory.

  • chromium-browser: Use after free in speech (CVE-2020-6505)

  • chromium-browser: Insufficient policy enforcement in WebView (CVE-2020-6506)

  • chromium-browser: Out of bounds write in V8 (CVE-2020-6507)

Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.

##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2020:2643. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(137710);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/01/23");

  script_cve_id("CVE-2020-6505", "CVE-2020-6506", "CVE-2020-6507");
  script_xref(name:"RHSA", value:"2020:2643");
  script_xref(name:"IAVA", value:"2020-A-0261-S");

  script_name(english:"RHEL 6 : chromium-browser (RHSA-2020:2643)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates.");
  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-2020:2643 advisory.

  - chromium-browser: Use after free in speech (CVE-2020-6505)

  - chromium-browser: Insufficient policy enforcement in WebView (CVE-2020-6506)

  - chromium-browser: Out of bounds write in V8 (CVE-2020-6507)

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/security/cve/CVE-2020-6505");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-6506");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-6507");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2020:2643");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1847268");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1847269");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1847270");
  script_set_attribute(attribute:"solution", value:
"Update the affected chromium-browser 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:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/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-2020-6507");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-6505");

  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_cwe_id(358, 416, 787);

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/06/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/06/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_els:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_eus:6.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:chromium-browser");
  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:"Red Hat Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "redhat_repos.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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
  {
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      'content/dist/rhel/client/6/6Client/i386/optional/source/SRPMS',
      'content/dist/rhel/client/6/6Client/i386/oracle-java-rm/os',
      'content/dist/rhel/client/6/6Client/i386/oracle-java-rm/source/SRPMS',
      'content/dist/rhel/client/6/6Client/i386/os',
      'content/dist/rhel/client/6/6Client/i386/source/SRPMS',
      'content/dist/rhel/client/6/6Client/i386/supplementary/debug',
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      'content/dist/rhel/client/6/6Client/i386/supplementary/source/SRPMS',
      'content/dist/rhel/client/6/6Client/x86_64/debug',
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      'content/dist/rhel/client/6/6Client/x86_64/os',
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      '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/debug',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/hpn/debug',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/hpn/os',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/hpn/source/SRPMS',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/optional/debug',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/optional/os',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/optional/source/SRPMS',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/oracle-java-rm/os',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/oracle-java-rm/source/SRPMS',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/os',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/scalablefilesystem/debug',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/scalablefilesystem/os',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/scalablefilesystem/source/SRPMS',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/source/SRPMS',
      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/supplementary/debug',
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      'content/dist/rhel/computenode/6/6ComputeNode/x86_64/supplementary/source/SRPMS',
      'content/dist/rhel/server/6/6Server/i386/debug',
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      'content/dist/rhel/server/6/6Server/i386/highavailability/os',
      'content/dist/rhel/server/6/6Server/i386/highavailability/source/SRPMS',
      'content/dist/rhel/server/6/6Server/i386/loadbalancer/debug',
      'content/dist/rhel/server/6/6Server/i386/loadbalancer/os',
      'content/dist/rhel/server/6/6Server/i386/loadbalancer/source/SRPMS',
      'content/dist/rhel/server/6/6Server/i386/optional/debug',
      'content/dist/rhel/server/6/6Server/i386/optional/os',
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      'content/dist/rhel/server/6/6Server/i386/os',
      'content/dist/rhel/server/6/6Server/i386/resilientstorage/debug',
      'content/dist/rhel/server/6/6Server/i386/resilientstorage/os',
      'content/dist/rhel/server/6/6Server/i386/resilientstorage/source/SRPMS',
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      'content/dist/rhel/server/6/6Server/x86_64/resilientstorage/source/SRPMS',
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      'content/dist/rhel/server/6/6Server/x86_64/sap/os',
      'content/dist/rhel/server/6/6Server/x86_64/sap/source/SRPMS',
      'content/dist/rhel/server/6/6Server/x86_64/scalablefilesystem/debug',
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      'content/dist/rhel/server/6/6Server/x86_64/scalablefilesystem/source/SRPMS',
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      'content/dist/rhel/server/6/6Server/x86_64/supplementary/source/SRPMS',
      'content/dist/rhel/workstation/6/6Workstation/i386/debug',
      'content/dist/rhel/workstation/6/6Workstation/i386/optional/debug',
      'content/dist/rhel/workstation/6/6Workstation/i386/optional/os',
      'content/dist/rhel/workstation/6/6Workstation/i386/optional/source/SRPMS',
      'content/dist/rhel/workstation/6/6Workstation/i386/oracle-java-rm/os',
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      'content/fastrack/rhel/server/6/x86_64/source/SRPMS',
      'content/fastrack/rhel/workstation/6/i386/debug',
      'content/fastrack/rhel/workstation/6/i386/optional/debug',
      'content/fastrack/rhel/workstation/6/i386/optional/os',
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      'content/fastrack/rhel/workstation/6/i386/os',
      'content/fastrack/rhel/workstation/6/i386/source/SRPMS',
      'content/fastrack/rhel/workstation/6/x86_64/debug',
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      'content/fastrack/rhel/workstation/6/x86_64/optional/os',
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      'content/fastrack/rhel/workstation/6/x86_64/os',
      'content/fastrack/rhel/workstation/6/x86_64/scalablefilesystem/debug',
      'content/fastrack/rhel/workstation/6/x86_64/scalablefilesystem/os',
      'content/fastrack/rhel/workstation/6/x86_64/scalablefilesystem/source/SRPMS',
      'content/fastrack/rhel/workstation/6/x86_64/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'chromium-browser-83.0.4103.106-1.el6_10', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
      {'reference':'chromium-browser-83.0.4103.106-1.el6_10', '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'];
  var enterprise_linux_flag = rhel_repo_urls_has_content_dist_rhel(repo_urls: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;
    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']) && !enterprise_linux_flag) 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 (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)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  if (empty_or_null(applicable_repo_urls)) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = rpm_report_get() + redhat_report_package_caveat();
  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');
}
VendorProductVersionCPE
redhatenterprise_linux6cpe:/o:redhat:enterprise_linux:6
redhatrhel_els6cpe:/o:redhat:rhel_els:6
redhatrhel_eus6.0cpe:/o:redhat:rhel_eus:6.0
redhatenterprise_linuxchromium-browserp-cpe:/a:redhat:enterprise_linux:chromium-browser

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

9.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

0.944 High

EPSS

Percentile

99.2%