RHEL 8 : kernel (RHSA-2024:1268)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2024:1268. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(191910);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/19");

  script_cve_id(
    "CVE-2022-3545",
    "CVE-2022-38096",
    "CVE-2022-40982",
    "CVE-2022-41858",
    "CVE-2023-3390",
    "CVE-2023-3611",
    "CVE-2023-4623",
    "CVE-2023-4921",
    "CVE-2023-5178",
    "CVE-2023-6817",
    "CVE-2023-31436",
    "CVE-2023-35001",
    "CVE-2023-38409",
    "CVE-2023-40283",
    "CVE-2023-45871",
    "CVE-2024-0646"
  );
  script_xref(name:"RHSA", value:"2024:1268");

  script_name(english:"RHEL 8 : kernel (RHSA-2024:1268)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for kernel.");
  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-2024:1268 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001,ZDI-CAN-20721)

    * hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982,Downfall)

    * kernel: net/sched: sch_qfq component can be exploited if in qfq_change_agg function happens qfq_enqueue
    overhead (CVE-2023-3611)

    * kernel: fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment
    (CVE-2023-38409)

    * kernel: net/sched: sch_hfsc UAF (CVE-2023-4623)

    * kernel: null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip   (CVE-2022-41858)

    * kernel: nfp: use-after-free in area_cache_get() (CVE-2022-3545)

    * kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (CVE-2023-40283)

    * kernel: use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)

    * kernel: IGB driver inadequate buffer size for frames larger than MTU (CVE-2023-45871)

    * kernel: out-of-bounds write in qfq_change_class function (CVE-2023-31436)

    * kernel: inactive elements in nft_pipapo_walk (CVE-2023-6817)

    * kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as
    destination (CVE-2024-0646)

    * kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in
    batch requests (CVE-2023-3390)

    * kernel: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query (CVE-2022-38096)

    * kernel: use-after-free in sch_qfq network scheduler (CVE-2023-4921)

    Bug Fix(es):

    * kernel: fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment
    (JIRA:RHEL-1203)

    * How to reduce or prevent thousands of kworker/events_freezable_power_efficient threads being created
    every time multipath -ll is run (JIRA:RHEL-15054)

    * kernel: net/sched: sch_hfsc UAF (JIRA:RHEL-16461)

    * [SanityOnly][kernel]BUG: sleeping function called from invalid context at
    kernel/locking/spinlock_rt.c:35 at: sock_map_update_elem_sys+0x85/0x2a0 (JIRA:RHEL-6126)

    * kernel: hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (JIRA:RHEL-9246)

    * ipoib mcast lockup fix (JIRA:RHEL-19695)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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/2024/rhsa-2024_1268.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f8d51736");
  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=2133452");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2144379");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2161310");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2192671");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2213260");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2220892");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2223949");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2225191");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2230042");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2231800");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2237757");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2241924");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2244723");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2245514");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2253908");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2255139");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2024:1268");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL kernel package based on the guidance in RHSA-2024:1268.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-5178");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(120, 125, 129, 200, 416, 476, 787);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/09/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/03/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/03/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_aus:8.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_e4s:8.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_tus:8.2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:bpftool");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-cross-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-modules-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-modules-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python3-perf");
  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) 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: 'eq', os_version: os_ver, rhel_version: '8.2')) audit(AUDIT_OS_NOT, 'Red Hat 8.2', '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);

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  rm_kb_item(name:'Host/uptrack-uname-r');
  var cve_list = make_list('CVE-2022-3545', 'CVE-2022-38096', 'CVE-2022-40982', 'CVE-2022-41858', 'CVE-2023-3390', 'CVE-2023-3611', 'CVE-2023-4623', 'CVE-2023-4921', 'CVE-2023-5178', 'CVE-2023-6817', 'CVE-2023-31436', 'CVE-2023-35001', 'CVE-2023-38409', 'CVE-2023-40283', 'CVE-2023-45871', 'CVE-2024-0646');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2024:1268');
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

var constraints = [
  {
    'repo_relative_urls': [
      'content/aus/rhel8/8.2/x86_64/baseos/debug',
      'content/aus/rhel8/8.2/x86_64/baseos/os',
      'content/aus/rhel8/8.2/x86_64/baseos/source/SRPMS',
      'content/e4s/rhel8/8.2/ppc64le/baseos/debug',
      'content/e4s/rhel8/8.2/ppc64le/baseos/os',
      'content/e4s/rhel8/8.2/ppc64le/baseos/source/SRPMS',
      'content/e4s/rhel8/8.2/x86_64/baseos/debug',
      'content/e4s/rhel8/8.2/x86_64/baseos/os',
      'content/e4s/rhel8/8.2/x86_64/baseos/source/SRPMS',
      'content/tus/rhel8/8.2/x86_64/baseos/debug',
      'content/tus/rhel8/8.2/x86_64/baseos/os',
      'content/tus/rhel8/8.2/x86_64/baseos/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'bpftool-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bpftool-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-core-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-core-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-cross-headers-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-cross-headers-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-core-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-core-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-extra-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-extra-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-headers-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-headers-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-extra-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-extra-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-perf-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-perf-4.18.0-193.128.1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', '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 subscription_caveat = '\n' +
    'NOTE: This vulnerability check contains fixes that apply to\n' +
    'packages only available in the Red Hat Enterprise Linux\n' +
    'Advanced Update Support, Telco Extended Update Support or Update Services for SAP Solutions repositories.\n' +
    'Access to these repositories requires a paid RHEL subscription.\n';
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();
  else extra = subscription_caveat + rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bpftool / kernel / kernel-core / kernel-cross-headers / etc');
}