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RHEL 8 : GNOME (RHSA-2021:1586)

🗓️ 19 May 2021 00:00:00Reported by This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.Type 
nessus
 nessus🔗 www.tenable.com👁 162 Views

The RHEL 8 GNOME is affected by multiple vulnerabilities including insecure permissions, arbitrary code execution, creation of admin account, memory corruption, and cross site scripting

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Code
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2021:1586. The text
# itself is copyright (C) Red Hat, Inc.
##

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

if (description)
{
  script_id(149698);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/28");

  script_cve_id(
    "CVE-2019-13012",
    "CVE-2020-9948",
    "CVE-2020-9951",
    "CVE-2020-9983",
    "CVE-2020-13543",
    "CVE-2020-13584",
    "CVE-2020-16125",
    "CVE-2021-1817",
    "CVE-2021-1820",
    "CVE-2021-1825",
    "CVE-2021-1826",
    "CVE-2021-30661"
  );
  script_xref(name:"RHSA", value:"2021:1586");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/11/17");

  script_name(english:"RHEL 8 : GNOME (RHSA-2021:1586)");

  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 8 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2021:1586 advisory.

  - glib2: insecure permissions for files and directories (CVE-2019-13012)

  - webkitgtk: type confusion may lead to arbitrary code execution (CVE-2020-9948)

  - webkitgtk: use-after-free may lead to arbitrary code execution (CVE-2020-13543, CVE-2020-13584,
    CVE-2020-9951)

  - webkitgtk: out-of-bounds write may lead to code execution (CVE-2020-9983)

  - gdm: inability to timely contact accountservice via dbus leads gnome-initial-setup to creation of account
    with admin privileges (CVE-2020-16125)

  - webkitgtk: Memory corruption leading to arbitrary code execution (CVE-2021-1817)

  - webkitgtk: Memory initialization issue possibly leading to memory disclosure (CVE-2021-1820)

  - webkitgtk: Input validation issue leading to cross site scripting attack (CVE-2021-1825)

  - webkitgtk: Logic issue leading to universal cross site scripting attack (CVE-2021-1826)

  - webkitgtk: Use-after-free leading to arbitrary code execution (CVE-2021-30661)

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/2021/rhsa-2021_1586.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6d54c601");
  # https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?862005a9");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#moderate");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2021:1586");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1860946");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1861769");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1865718");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1870837");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1871041");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1876291");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1881312");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1883304");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1883868");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1886822");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=837035");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-30661");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(20, 416, 636, 732, 787, 843);
  script_set_attribute(attribute:"vendor_severity", value:"Moderate");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/05/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/05/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:gdm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glib2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glib2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glib2-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glib2-fam");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glib2-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glib2-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkit2gtk3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc-devel");
  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) 2021-2024 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: '8')) audit(AUDIT_OS_NOT, 'Red Hat 8.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': [
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      'content/dist/rhel8/8.10/ppc64le/appstream/debug',
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      'content/dist/rhel8/8.10/ppc64le/appstream/source/SRPMS',
      'content/dist/rhel8/8.10/s390x/appstream/debug',
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      'content/dist/rhel8/8.6/aarch64/appstream/debug',
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      'content/dist/rhel8/8.6/s390x/appstream/debug',
      'content/dist/rhel8/8.6/s390x/appstream/os',
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      'content/dist/rhel8/8.6/x86_64/appstream/debug',
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      'content/dist/rhel8/8.8/s390x/appstream/debug',
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      'content/dist/rhel8/8.8/s390x/appstream/source/SRPMS',
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      'content/dist/rhel8/8.9/aarch64/appstream/os',
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      'content/dist/rhel8/8.9/ppc64le/appstream/debug',
      'content/dist/rhel8/8.9/ppc64le/appstream/os',
      'content/dist/rhel8/8.9/ppc64le/appstream/source/SRPMS',
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      'content/dist/rhel8/8/ppc64le/appstream/debug',
      'content/dist/rhel8/8/ppc64le/appstream/os',
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      'content/dist/rhel8/8/s390x/appstream/debug',
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      'content/dist/rhel8/8/x86_64/appstream/debug',
      'content/dist/rhel8/8/x86_64/appstream/os',
      'content/dist/rhel8/8/x86_64/appstream/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'gdm-3.28.3-39.el8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1', 'cves':['CVE-2020-16125']},
      {'reference':'webkit2gtk3-2.30.4-1.el8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'cves':['CVE-2020-9948', 'CVE-2020-9951', 'CVE-2020-9983', 'CVE-2020-13543', 'CVE-2020-13584', 'CVE-2021-1817', 'CVE-2021-1820', 'CVE-2021-1825', 'CVE-2021-1826', 'CVE-2021-30661']},
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    ]
  },
  {
    'repo_relative_urls': [
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      'content/dist/rhel8/8.10/ppc64le/baseos/debug',
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      'content/dist/rhel8/8.10/ppc64le/baseos/source/SRPMS',
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      'content/dist/rhel8/8.8/aarch64/codeready-builder/os',
      'content/dist/rhel8/8.8/aarch64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.8/ppc64le/baseos/debug',
      'content/dist/rhel8/8.8/ppc64le/baseos/os',
      'content/dist/rhel8/8.8/ppc64le/baseos/source/SRPMS',
      'content/dist/rhel8/8.8/ppc64le/codeready-builder/debug',
      'content/dist/rhel8/8.8/ppc64le/codeready-builder/os',
      'content/dist/rhel8/8.8/ppc64le/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.8/s390x/baseos/debug',
      'content/dist/rhel8/8.8/s390x/baseos/os',
      'content/dist/rhel8/8.8/s390x/baseos/source/SRPMS',
      'content/dist/rhel8/8.8/s390x/codeready-builder/debug',
      'content/dist/rhel8/8.8/s390x/codeready-builder/os',
      'content/dist/rhel8/8.8/s390x/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.8/x86_64/baseos/debug',
      'content/dist/rhel8/8.8/x86_64/baseos/os',
      'content/dist/rhel8/8.8/x86_64/baseos/source/SRPMS',
      'content/dist/rhel8/8.8/x86_64/codeready-builder/debug',
      'content/dist/rhel8/8.8/x86_64/codeready-builder/os',
      'content/dist/rhel8/8.8/x86_64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/aarch64/baseos/debug',
      'content/dist/rhel8/8.9/aarch64/baseos/os',
      'content/dist/rhel8/8.9/aarch64/baseos/source/SRPMS',
      'content/dist/rhel8/8.9/aarch64/codeready-builder/debug',
      'content/dist/rhel8/8.9/aarch64/codeready-builder/os',
      'content/dist/rhel8/8.9/aarch64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/ppc64le/baseos/debug',
      'content/dist/rhel8/8.9/ppc64le/baseos/os',
      'content/dist/rhel8/8.9/ppc64le/baseos/source/SRPMS',
      'content/dist/rhel8/8.9/ppc64le/codeready-builder/debug',
      'content/dist/rhel8/8.9/ppc64le/codeready-builder/os',
      'content/dist/rhel8/8.9/ppc64le/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/s390x/baseos/debug',
      'content/dist/rhel8/8.9/s390x/baseos/os',
      'content/dist/rhel8/8.9/s390x/baseos/source/SRPMS',
      'content/dist/rhel8/8.9/s390x/codeready-builder/debug',
      'content/dist/rhel8/8.9/s390x/codeready-builder/os',
      'content/dist/rhel8/8.9/s390x/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/x86_64/baseos/debug',
      'content/dist/rhel8/8.9/x86_64/baseos/os',
      'content/dist/rhel8/8.9/x86_64/baseos/source/SRPMS',
      'content/dist/rhel8/8.9/x86_64/codeready-builder/debug',
      'content/dist/rhel8/8.9/x86_64/codeready-builder/os',
      'content/dist/rhel8/8.9/x86_64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/aarch64/baseos/debug',
      'content/dist/rhel8/8/aarch64/baseos/os',
      'content/dist/rhel8/8/aarch64/baseos/source/SRPMS',
      'content/dist/rhel8/8/aarch64/codeready-builder/debug',
      'content/dist/rhel8/8/aarch64/codeready-builder/os',
      'content/dist/rhel8/8/aarch64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/ppc64le/baseos/debug',
      'content/dist/rhel8/8/ppc64le/baseos/os',
      'content/dist/rhel8/8/ppc64le/baseos/source/SRPMS',
      'content/dist/rhel8/8/ppc64le/codeready-builder/debug',
      'content/dist/rhel8/8/ppc64le/codeready-builder/os',
      'content/dist/rhel8/8/ppc64le/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/s390x/baseos/debug',
      'content/dist/rhel8/8/s390x/baseos/os',
      'content/dist/rhel8/8/s390x/baseos/source/SRPMS',
      'content/dist/rhel8/8/s390x/codeready-builder/debug',
      'content/dist/rhel8/8/s390x/codeready-builder/os',
      'content/dist/rhel8/8/s390x/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/x86_64/baseos/debug',
      'content/dist/rhel8/8/x86_64/baseos/os',
      'content/dist/rhel8/8/x86_64/baseos/source/SRPMS',
      'content/dist/rhel8/8/x86_64/codeready-builder/debug',
      'content/dist/rhel8/8/x86_64/codeready-builder/os',
      'content/dist/rhel8/8/x86_64/codeready-builder/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'glib2-2.56.4-9.el8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'cves':['CVE-2019-13012']},
      {'reference':'glib2-devel-2.56.4-9.el8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'cves':['CVE-2019-13012']},
      {'reference':'glib2-doc-2.56.4-9.el8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'cves':['CVE-2019-13012']},
      {'reference':'glib2-fam-2.56.4-9.el8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'cves':['CVE-2019-13012']},
      {'reference':'glib2-static-2.56.4-9.el8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'cves':['CVE-2019-13012']},
      {'reference':'glib2-tests-2.56.4-9.el8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'cves':['CVE-2019-13012']}
    ]
  }
];

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, 'gdm / glib2 / glib2-devel / glib2-doc / glib2-fam / glib2-static / etc');
}

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19 May 2021 00:00Current
9.3High risk
Vulners AI Score9.3
CVSS38.8
EPSS0.069
rhel 8gnomemultiple vulnerabilitiesinsecure permissionsarbitrary code executionadmin privilegesmemory corruptioncross site scripting
162
.json
Report