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nessusThis script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.REDHAT-RHSA-2023-5313.NASL
HistorySep 20, 2023 - 12:00 a.m.

RHEL 9 : open-vm-tools (RHSA-2023:5313)

2023-09-2000:00:00
This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
3
rhel 9
open-vm-tools
saml token signature
bypass
cve-2023-20900
rhsa-2023:5313
nessus
security update
vulnerability
red hat
important
cpe

7.5 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.7 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

44.9%

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:5313 advisory.

  • open-vm-tools: SAML token signature bypass (CVE-2023-20900)

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

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2023:5313. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(181693);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/28");

  script_cve_id("CVE-2023-20900");
  script_xref(name:"RHSA", value:"2023:5313");

  script_name(english:"RHEL 9 : open-vm-tools (RHSA-2023:5313)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update for open-vm-tools.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in
the RHSA-2023:5313 advisory.

  - open-vm-tools: SAML token signature bypass (CVE-2023-20900)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_5313.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?aaad1103");
  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=2236542");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2023:5313");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL open-vm-tools package based on the guidance in RHSA-2023:5313.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:H/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:H/PR:N/UI:N/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-2023-20900");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(347);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/08/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/09/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:open-vm-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:open-vm-tools-desktop");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:open-vm-tools-salt-minion");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:open-vm-tools-sdmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:open-vm-tools-test");
  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) 2023-2024 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: '9')) audit(AUDIT_OS_NOT, 'Red Hat 9.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/rhel9/9.1/aarch64/appstream/debug',
      'content/dist/rhel9/9.1/aarch64/appstream/os',
      'content/dist/rhel9/9.1/aarch64/appstream/source/SRPMS',
      'content/dist/rhel9/9.1/x86_64/appstream/debug',
      'content/dist/rhel9/9.1/x86_64/appstream/os',
      'content/dist/rhel9/9.1/x86_64/appstream/source/SRPMS',
      'content/dist/rhel9/9.2/aarch64/appstream/debug',
      'content/dist/rhel9/9.2/aarch64/appstream/os',
      'content/dist/rhel9/9.2/aarch64/appstream/source/SRPMS',
      'content/dist/rhel9/9.2/x86_64/appstream/debug',
      'content/dist/rhel9/9.2/x86_64/appstream/os',
      'content/dist/rhel9/9.2/x86_64/appstream/source/SRPMS',
      'content/dist/rhel9/9.3/aarch64/appstream/debug',
      'content/dist/rhel9/9.3/aarch64/appstream/os',
      'content/dist/rhel9/9.3/aarch64/appstream/source/SRPMS',
      'content/dist/rhel9/9.3/x86_64/appstream/debug',
      'content/dist/rhel9/9.3/x86_64/appstream/os',
      'content/dist/rhel9/9.3/x86_64/appstream/source/SRPMS',
      'content/dist/rhel9/9.4/aarch64/appstream/debug',
      'content/dist/rhel9/9.4/aarch64/appstream/os',
      'content/dist/rhel9/9.4/aarch64/appstream/source/SRPMS',
      'content/dist/rhel9/9.4/x86_64/appstream/debug',
      'content/dist/rhel9/9.4/x86_64/appstream/os',
      'content/dist/rhel9/9.4/x86_64/appstream/source/SRPMS',
      'content/dist/rhel9/9/aarch64/appstream/debug',
      'content/dist/rhel9/9/aarch64/appstream/os',
      'content/dist/rhel9/9/aarch64/appstream/source/SRPMS',
      'content/dist/rhel9/9/x86_64/appstream/debug',
      'content/dist/rhel9/9/x86_64/appstream/os',
      'content/dist/rhel9/9/x86_64/appstream/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'open-vm-tools-12.1.5-1.el9_2.3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'open-vm-tools-12.1.5-1.el9_2.3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'open-vm-tools-desktop-12.1.5-1.el9_2.3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'open-vm-tools-desktop-12.1.5-1.el9_2.3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'open-vm-tools-salt-minion-12.1.5-1.el9_2.3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'open-vm-tools-sdmp-12.1.5-1.el9_2.3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'open-vm-tools-test-12.1.5-1.el9_2.3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'open-vm-tools-test-12.1.5-1.el9_2.3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':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, 'open-vm-tools / open-vm-tools-desktop / open-vm-tools-salt-minion / etc');
}
VendorProductVersionCPE
redhatenterprise_linux9cpe:/o:redhat:enterprise_linux:9
redhatenterprise_linuxopen-vm-toolsp-cpe:/a:redhat:enterprise_linux:open-vm-tools
redhatenterprise_linuxopen-vm-tools-desktopp-cpe:/a:redhat:enterprise_linux:open-vm-tools-desktop
redhatenterprise_linuxopen-vm-tools-salt-minionp-cpe:/a:redhat:enterprise_linux:open-vm-tools-salt-minion
redhatenterprise_linuxopen-vm-tools-sdmpp-cpe:/a:redhat:enterprise_linux:open-vm-tools-sdmp
redhatenterprise_linuxopen-vm-tools-testp-cpe:/a:redhat:enterprise_linux:open-vm-tools-test

7.5 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.7 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

44.9%