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nessusThis script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.REDHAT-RHSA-2022-5236.NASL
HistoryJun 28, 2022 - 12:00 a.m.

RHEL 7 : kernel-rt (RHSA-2022:5236)

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
18

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.9 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.001 Low

EPSS

Percentile

50.8%

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:5236 advisory.

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

  • 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-2022:5236. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(162572);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/16");

  script_cve_id("CVE-2022-1729");
  script_xref(name:"RHSA", value:"2022:5236");

  script_name(english:"RHEL 7 : kernel-rt (RHSA-2022:5236)");

  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 7 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2022:5236 advisory.

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

  - 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-2022-1729");
  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-2022:5236");
  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:H/Au:S/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:L/AC:H/PR:L/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-2022-1729");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(362, 366, 416);

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/05/31");
  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:7");
  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-debug");
  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-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-doc");
  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-trace");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-kvm");
  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: '7')) audit(AUDIT_OS_NOT, 'Red Hat 7.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-2022-1729', 'CVE-2022-1966', 'CVE-2022-32250');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2022:5236');
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

var constraints = [
  {
    'repo_relative_urls': [
      'content/dist/rhel/client/7/7Client/x86_64/debug',
      'content/dist/rhel/client/7/7Client/x86_64/optional/debug',
      'content/dist/rhel/client/7/7Client/x86_64/optional/os',
      'content/dist/rhel/client/7/7Client/x86_64/optional/source/SRPMS',
      'content/dist/rhel/client/7/7Client/x86_64/oracle-java-rm/os',
      'content/dist/rhel/client/7/7Client/x86_64/os',
      'content/dist/rhel/client/7/7Client/x86_64/source/SRPMS',
      'content/dist/rhel/client/7/7Client/x86_64/supplementary/debug',
      'content/dist/rhel/client/7/7Client/x86_64/supplementary/os',
      'content/dist/rhel/client/7/7Client/x86_64/supplementary/source/SRPMS',
      'content/dist/rhel/computenode/7/7ComputeNode/x86_64/debug',
      'content/dist/rhel/computenode/7/7ComputeNode/x86_64/optional/debug',
      'content/dist/rhel/computenode/7/7ComputeNode/x86_64/optional/os',
      'content/dist/rhel/computenode/7/7ComputeNode/x86_64/optional/source/SRPMS',
      'content/dist/rhel/computenode/7/7ComputeNode/x86_64/oracle-java-rm/os',
      'content/dist/rhel/computenode/7/7ComputeNode/x86_64/os',
      'content/dist/rhel/computenode/7/7ComputeNode/x86_64/source/SRPMS',
      'content/dist/rhel/computenode/7/7ComputeNode/x86_64/supplementary/debug',
      'content/dist/rhel/computenode/7/7ComputeNode/x86_64/supplementary/os',
      'content/dist/rhel/computenode/7/7ComputeNode/x86_64/supplementary/source/SRPMS',
      'content/dist/rhel/server/7/7Server/x86_64/debug',
      'content/dist/rhel/server/7/7Server/x86_64/highavailability/debug',
      'content/dist/rhel/server/7/7Server/x86_64/highavailability/os',
      'content/dist/rhel/server/7/7Server/x86_64/highavailability/source/SRPMS',
      'content/dist/rhel/server/7/7Server/x86_64/nfv/debug',
      'content/dist/rhel/server/7/7Server/x86_64/nfv/os',
      'content/dist/rhel/server/7/7Server/x86_64/nfv/source/SRPMS',
      'content/dist/rhel/server/7/7Server/x86_64/optional/debug',
      'content/dist/rhel/server/7/7Server/x86_64/optional/os',
      'content/dist/rhel/server/7/7Server/x86_64/optional/source/SRPMS',
      'content/dist/rhel/server/7/7Server/x86_64/oracle-java-rm/os',
      'content/dist/rhel/server/7/7Server/x86_64/os',
      'content/dist/rhel/server/7/7Server/x86_64/resilientstorage/debug',
      'content/dist/rhel/server/7/7Server/x86_64/resilientstorage/os',
      'content/dist/rhel/server/7/7Server/x86_64/resilientstorage/source/SRPMS',
      'content/dist/rhel/server/7/7Server/x86_64/rt/debug',
      'content/dist/rhel/server/7/7Server/x86_64/rt/os',
      'content/dist/rhel/server/7/7Server/x86_64/rt/source/SRPMS',
      'content/dist/rhel/server/7/7Server/x86_64/sap-hana/debug',
      'content/dist/rhel/server/7/7Server/x86_64/sap-hana/os',
      'content/dist/rhel/server/7/7Server/x86_64/sap-hana/source/SRPMS',
      'content/dist/rhel/server/7/7Server/x86_64/sap/debug',
      'content/dist/rhel/server/7/7Server/x86_64/sap/os',
      'content/dist/rhel/server/7/7Server/x86_64/sap/source/SRPMS',
      'content/dist/rhel/server/7/7Server/x86_64/source/SRPMS',
      'content/dist/rhel/server/7/7Server/x86_64/supplementary/debug',
      'content/dist/rhel/server/7/7Server/x86_64/supplementary/os',
      'content/dist/rhel/server/7/7Server/x86_64/supplementary/source/SRPMS',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/debug',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/optional/debug',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/optional/os',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/optional/source/SRPMS',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/oracle-java-rm/os',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/os',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/source/SRPMS',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/supplementary/debug',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/supplementary/os',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/supplementary/source/SRPMS',
      'content/fastrack/rhel/client/7/x86_64/debug',
      'content/fastrack/rhel/client/7/x86_64/optional/debug',
      'content/fastrack/rhel/client/7/x86_64/optional/os',
      'content/fastrack/rhel/client/7/x86_64/optional/source/SRPMS',
      'content/fastrack/rhel/client/7/x86_64/os',
      'content/fastrack/rhel/client/7/x86_64/source/SRPMS',
      'content/fastrack/rhel/computenode/7/x86_64/debug',
      'content/fastrack/rhel/computenode/7/x86_64/optional/debug',
      'content/fastrack/rhel/computenode/7/x86_64/optional/os',
      'content/fastrack/rhel/computenode/7/x86_64/optional/source/SRPMS',
      'content/fastrack/rhel/computenode/7/x86_64/os',
      'content/fastrack/rhel/computenode/7/x86_64/source/SRPMS',
      'content/fastrack/rhel/server/7/x86_64/debug',
      'content/fastrack/rhel/server/7/x86_64/highavailability/debug',
      'content/fastrack/rhel/server/7/x86_64/highavailability/os',
      'content/fastrack/rhel/server/7/x86_64/highavailability/source/SRPMS',
      'content/fastrack/rhel/server/7/x86_64/optional/debug',
      'content/fastrack/rhel/server/7/x86_64/optional/os',
      'content/fastrack/rhel/server/7/x86_64/optional/source/SRPMS',
      'content/fastrack/rhel/server/7/x86_64/os',
      'content/fastrack/rhel/server/7/x86_64/resilientstorage/debug',
      'content/fastrack/rhel/server/7/x86_64/resilientstorage/os',
      'content/fastrack/rhel/server/7/x86_64/resilientstorage/source/SRPMS',
      'content/fastrack/rhel/server/7/x86_64/source/SRPMS',
      'content/fastrack/rhel/workstation/7/x86_64/debug',
      'content/fastrack/rhel/workstation/7/x86_64/optional/debug',
      'content/fastrack/rhel/workstation/7/x86_64/optional/os',
      'content/fastrack/rhel/workstation/7/x86_64/optional/source/SRPMS',
      'content/fastrack/rhel/workstation/7/x86_64/os',
      'content/fastrack/rhel/workstation/7/x86_64/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'kernel-rt-3.10.0-1160.71.1.rt56.1212.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-3.10.0-1160.71.1.rt56.1212.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-devel-3.10.0-1160.71.1.rt56.1212.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-debug-kvm-3.10.0-1160.71.1.rt56.1212.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-devel-3.10.0-1160.71.1.rt56.1212.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-doc-3.10.0-1160.71.1.rt56.1212.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-kvm-3.10.0-1160.71.1.rt56.1212.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-trace-3.10.0-1160.71.1.rt56.1212.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-trace-devel-3.10.0-1160.71.1.rt56.1212.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-rt-trace-kvm-3.10.0-1160.71.1.rt56.1212.el7', 'cpu':'x86_64', 'release':'7', '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;
    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 (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-debug / kernel-rt-debug-devel / etc');
}
VendorProductVersionCPE
redhatenterprise_linux7cpe:/o:redhat:enterprise_linux:7
redhatenterprise_linuxkernel-rtp-cpe:/a:redhat:enterprise_linux:kernel-rt
redhatenterprise_linuxkernel-rt-debugp-cpe:/a:redhat:enterprise_linux:kernel-rt-debug
redhatenterprise_linuxkernel-rt-debug-develp-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel
redhatenterprise_linuxkernel-rt-debug-kvmp-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm
redhatenterprise_linuxkernel-rt-develp-cpe:/a:redhat:enterprise_linux:kernel-rt-devel
redhatenterprise_linuxkernel-rt-docp-cpe:/a:redhat:enterprise_linux:kernel-rt-doc
redhatenterprise_linuxkernel-rt-kvmp-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm
redhatenterprise_linuxkernel-rt-tracep-cpe:/a:redhat:enterprise_linux:kernel-rt-trace
redhatenterprise_linuxkernel-rt-trace-develp-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel
Rows per page:
1-10 of 111

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.9 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.001 Low

EPSS

Percentile

50.8%