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This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.REDHAT-RHSA-2022-5267.NASL
HistoryJun 28, 2022 - 12:00 a.m.

RHEL 9 : kernel-rt (RHSA-2022:5267)

2022-06-2800:00:00
This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
11

8 High

AI Score

Confidence

High

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:5267 advisory.

  • kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak (CVE-2022-1012)

  • kernel: race condition in perf_event_open leads to privilege escalation (CVE-2022-1729)

  • kernel: buffer overflow in IPsec ESP transformation code (CVE-2022-27666)

  • kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-32250)

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-2022:5267. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(162574);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/16");

  script_cve_id(
    "CVE-2022-1012",
    "CVE-2022-1729",
    "CVE-2022-27666"
  );
  script_xref(name:"RHSA", value:"2022:5267");

  script_name(english:"RHEL 9 : kernel-rt (RHSA-2022:5267)");

  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 9 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2022:5267 advisory.

  - kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak
    (CVE-2022-1012)

  - kernel: race condition in perf_event_open leads to privilege escalation (CVE-2022-1729)

  - kernel: buffer overflow in IPsec ESP transformation code (CVE-2022-27666)

  - kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root
    (CVE-2022-32250)

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-2022-1012");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2022-1729");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2022-27666");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2022-32250");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2022:5267");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/2061633");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/2064604");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/2086753");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/2092427");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/2093146");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/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:N/S:U/C:L/I:N/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-2022-27666");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-1012");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");
  script_cwe_id(119, 122, 200, 362, 366, 416, 497);

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/03/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/06/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/06/28");

  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:"cpe:/o:redhat:rhel_e4s:9.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_eus:9.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra");
  script_set_attribute(attribute:"generated_plugin", value:"former");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  rm_kb_item(name:'Host/uptrack-uname-r');
  var cve_list = make_list('CVE-2022-1012', 'CVE-2022-1729', 'CVE-2022-1966', 'CVE-2022-27666', 'CVE-2022-32250');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2022:5267');
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

var constraints = [
  {
    'repo_relative_urls': [
      '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',
      'content/dist/rhel9/9/x86_64/baseos/debug',
      'content/dist/rhel9/9/x86_64/baseos/os',
      'content/dist/rhel9/9/x86_64/baseos/source/SRPMS',
      'content/dist/rhel9/9/x86_64/codeready-builder/debug',
      'content/dist/rhel9/9/x86_64/codeready-builder/os',
      'content/dist/rhel9/9/x86_64/codeready-builder/source/SRPMS',
      'content/dist/rhel9/9/x86_64/highavailability/debug',
      'content/dist/rhel9/9/x86_64/highavailability/os',
      'content/dist/rhel9/9/x86_64/highavailability/source/SRPMS',
      'content/dist/rhel9/9/x86_64/nfv/debug',
      'content/dist/rhel9/9/x86_64/nfv/os',
      'content/dist/rhel9/9/x86_64/nfv/source/SRPMS',
      'content/dist/rhel9/9/x86_64/resilientstorage/debug',
      'content/dist/rhel9/9/x86_64/resilientstorage/os',
      'content/dist/rhel9/9/x86_64/resilientstorage/source/SRPMS',
      'content/dist/rhel9/9/x86_64/rt/debug',
      'content/dist/rhel9/9/x86_64/rt/os',
      'content/dist/rhel9/9/x86_64/rt/source/SRPMS',
      'content/dist/rhel9/9/x86_64/sap-solutions/debug',
      'content/dist/rhel9/9/x86_64/sap-solutions/os',
      'content/dist/rhel9/9/x86_64/sap-solutions/source/SRPMS',
      'content/dist/rhel9/9/x86_64/sap/debug',
      'content/dist/rhel9/9/x86_64/sap/os',
      'content/dist/rhel9/9/x86_64/sap/source/SRPMS',
      'content/dist/rhel9/9/x86_64/supplementary/debug',
      'content/dist/rhel9/9/x86_64/supplementary/os',
      'content/dist/rhel9/9/x86_64/supplementary/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'kernel-rt-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-core-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-core-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-devel-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-kvm-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-modules-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-modules-extra-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-devel-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-kvm-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-modules-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-modules-extra-5.14.0-70.17.1.rt21.89.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'repo_relative_urls': [
      'content/e4s/rhel9/9.0/x86_64/appstream/debug',
      'content/e4s/rhel9/9.0/x86_64/appstream/os',
      'content/e4s/rhel9/9.0/x86_64/appstream/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/baseos/debug',
      'content/e4s/rhel9/9.0/x86_64/baseos/os',
      'content/e4s/rhel9/9.0/x86_64/baseos/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/highavailability/debug',
      'content/e4s/rhel9/9.0/x86_64/highavailability/os',
      'content/e4s/rhel9/9.0/x86_64/highavailability/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/nfv/debug',
      'content/e4s/rhel9/9.0/x86_64/nfv/os',
      'content/e4s/rhel9/9.0/x86_64/nfv/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/resilientstorage/debug',
      'content/e4s/rhel9/9.0/x86_64/resilientstorage/os',
      'content/e4s/rhel9/9.0/x86_64/resilientstorage/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/rt/debug',
      'content/e4s/rhel9/9.0/x86_64/rt/os',
      'content/e4s/rhel9/9.0/x86_64/rt/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/sap-solutions/debug',
      'content/e4s/rhel9/9.0/x86_64/sap-solutions/os',
      'content/e4s/rhel9/9.0/x86_64/sap-solutions/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/sap/debug',
      'content/e4s/rhel9/9.0/x86_64/sap/os',
      'content/e4s/rhel9/9.0/x86_64/sap/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/appstream/debug',
      'content/eus/rhel9/9.0/x86_64/appstream/os',
      'content/eus/rhel9/9.0/x86_64/appstream/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/baseos/debug',
      'content/eus/rhel9/9.0/x86_64/baseos/os',
      'content/eus/rhel9/9.0/x86_64/baseos/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/codeready-builder/debug',
      'content/eus/rhel9/9.0/x86_64/codeready-builder/os',
      'content/eus/rhel9/9.0/x86_64/codeready-builder/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/highavailability/debug',
      'content/eus/rhel9/9.0/x86_64/highavailability/os',
      'content/eus/rhel9/9.0/x86_64/highavailability/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/resilientstorage/debug',
      'content/eus/rhel9/9.0/x86_64/resilientstorage/os',
      'content/eus/rhel9/9.0/x86_64/resilientstorage/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/sap-solutions/debug',
      'content/eus/rhel9/9.0/x86_64/sap-solutions/os',
      'content/eus/rhel9/9.0/x86_64/sap-solutions/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/sap/debug',
      'content/eus/rhel9/9.0/x86_64/sap/os',
      'content/eus/rhel9/9.0/x86_64/sap/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/supplementary/debug',
      'content/eus/rhel9/9.0/x86_64/supplementary/os',
      'content/eus/rhel9/9.0/x86_64/supplementary/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'kernel-rt-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-core-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-core-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-devel-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-kvm-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-modules-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-modules-extra-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-devel-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-kvm-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-modules-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-modules-extra-5.14.0-70.17.1.rt21.89.el9_0', 'sp':'0', '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'];
  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, 'kernel-rt / kernel-rt-core / kernel-rt-debug / kernel-rt-debug-core / etc');
}
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