RHEL 8 : kernel (RHSA-2024:1404)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2024:1404. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(192277);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/03");

  script_cve_id(
    "CVE-2021-43975",
    "CVE-2022-3545",
    "CVE-2022-3594",
    "CVE-2022-4744",
    "CVE-2022-28388",
    "CVE-2022-36402",
    "CVE-2022-38096",
    "CVE-2022-38457",
    "CVE-2022-40133",
    "CVE-2022-41858",
    "CVE-2022-45869",
    "CVE-2022-45887",
    "CVE-2023-1382",
    "CVE-2023-2166",
    "CVE-2023-2176",
    "CVE-2023-4921",
    "CVE-2023-5633",
    "CVE-2023-6606",
    "CVE-2023-6610",
    "CVE-2023-6817",
    "CVE-2023-6931",
    "CVE-2023-6932",
    "CVE-2023-7192",
    "CVE-2023-28772",
    "CVE-2023-30456",
    "CVE-2023-31084",
    "CVE-2023-33951",
    "CVE-2023-33952",
    "CVE-2023-40283",
    "CVE-2023-45862",
    "CVE-2023-51042",
    "CVE-2023-51043",
    "CVE-2024-0565",
    "CVE-2024-0646",
    "CVE-2024-1086"
  );
  script_xref(name:"RHSA", value:"2024:1404");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2024/06/20");

  script_name(english:"RHEL 8 : kernel (RHSA-2024:1404)");

  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-2024:1404 advisory.

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

    Security Fix(es):

    * kernel: out-of-bounds write in hw_atl_utils_fw_rpc_wait() in
    drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c (CVE-2021-43975)

    * kernel: double free in usb_8dev_start_xmit in drivers/net/can/usb/usb_8dev.c (CVE-2022-28388)

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

    * kernel: Rate limit overflow messages in r8152 in intr_callback (CVE-2022-3594)

    * kernel: tun: avoid double free in tun_free_netdev (CVE-2022-4744)

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

    * kernel: denial of service in tipc_conn_close (CVE-2023-1382)

    * kernel: lib/seq_buf.c has a seq_buf_putmem_hex buffer overflow (CVE-2023-28772)

    * kernel: NULL pointer dereference in can_rcv_filter (CVE-2023-2166)

    * kernel: Slab-out-of-bound read in compare_netdev_and_ip (CVE-2023-2176)

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

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

    * kernel: Out-Of-Bounds Read vulnerability in smbCalcSize (CVE-2023-6606)

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

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

    * kernel: refcount leak in ctnetlink_create_conntrack() (CVE-2023-7192)

    Bug Fix(es):

    * The kernel is still getting hung up even after converting kernfs_mutex to kernfs_rwsem with massive
    concurrent kernfs access (open & lookup) performed by kubelet/node_exporter threads. (JIRA:RHEL-17149)

    * kernel: Rate limit overflow messages in r8152 in intr_callback (JIRA:RHEL-18810)

    * kernel: tun: avoid double free in tun_free_netdev (JIRA:RHEL-18813)

    * kernel: lib/seq_buf.c has a seq_buf_putmem_hex buffer overflow (JIRA:RHEL-18850)

    * kernel: NULL pointer dereference in can_rcv_filter (JIRA:RHEL-19461)

    * ipoib mcast lockup fix (JIRA:RHEL-19698)

    * kernel: denial of service in tipc_conn_close (JIRA:RHEL-18824)

    * Rhel-8.6 crash at  qed_get_current_link+0x11 during tx_timeout recovery  (JIRA:RHEL-20923)

    * kernel: use-after-free in sch_qfq network scheduler (JIRA:RHEL-14402)

    * RHEL8.6 - s390/qeth: NET2016 - fix use-after-free in HSCI (JIRA:RHEL-15849)

    * RHEL8.6 - s390/qeth: recovery and set offline lose routes and IPv6 addr (JIRA:RHEL-17883)

    * kernel: null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip (JIRA:RHEL-18582)

    * kernel: out-of-bounds write in hw_atl_utils_fw_rpc_wait() in
    drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c (JIRA:RHEL-18799)

    * kernel: double free in usb_8dev_start_xmit in drivers/net/can/usb/usb_8dev.c (JIRA:RHEL-18814)

    * kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (JIRA:RHEL-18998)

    * dm multipath device suspend deadlocks waiting on a flush request (JIRA:RHEL-19110)

    * kernel: Slab-out-of-bound read in compare_netdev_and_ip (JIRA:RHEL-19327)

    * kernel: A flaw leading to a use-after-free in area_cache_get() (JIRA:RHEL-19451)

    * [RHEL8] I/O blocked during fio background with IO schedule switch, cpu offline/online, pci nvme
    rescan/reset (JIRA:RHEL-20231)

    * kernel: refcount leak in ctnetlink_create_conntrack() (JIRA:RHEL-20298)

    * kernel: inactive elements in nft_pipapo_walk (JIRA:RHEL-20697)

    * kernel: Out-Of-Bounds Read vulnerability in smbCalcSize (JIRA:RHEL-21661)

    * kernel NULL pointer at RIP: 0010:kyber_has_work+0x1c/0x60 (JIRA:RHEL-21784)

    * kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as
    destination (JIRA:RHEL-22090)

    * backport timerlat user-space support (JIRA:RHEL-20361)

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.");
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}


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: '8.8')) audit(AUDIT_OS_NOT, 'Red Hat 8.8', '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-2021-43975', 'CVE-2022-3545', 'CVE-2022-3594', 'CVE-2022-4744', 'CVE-2022-28388', 'CVE-2022-36402', 'CVE-2022-38096', 'CVE-2022-38457', 'CVE-2022-40133', 'CVE-2022-41858', 'CVE-2022-45869', 'CVE-2022-45887', 'CVE-2023-1382', 'CVE-2023-2166', 'CVE-2023-2176', 'CVE-2023-4921', 'CVE-2023-5633', 'CVE-2023-6606', 'CVE-2023-6610', 'CVE-2023-6817', 'CVE-2023-6931', 'CVE-2023-6932', 'CVE-2023-7192', 'CVE-2023-28772', 'CVE-2023-30456', 'CVE-2023-31084', 'CVE-2023-33951', 'CVE-2023-33952', 'CVE-2023-40283', 'CVE-2023-45862', 'CVE-2023-51042', 'CVE-2023-51043', 'CVE-2024-0565', 'CVE-2024-0646', 'CVE-2024-1086');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2024:1404');
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

var constraints = [
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      'content/e4s/rhel8/8.8/ppc64le/baseos/source/SRPMS',
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      {'reference':'kernel-tools-libs-devel-4.18.0-477.51.1.el8_8', 'sp':'8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-4.18.0-477.51.1.el8_8', 'sp':'8', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-4.18.0-477.51.1.el8_8', 'sp':'8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-zfcpdump-4.18.0-477.51.1.el8_8', 'sp':'8', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-zfcpdump-core-4.18.0-477.51.1.el8_8', 'sp':'8', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-zfcpdump-devel-4.18.0-477.51.1.el8_8', 'sp':'8', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-zfcpdump-modules-4.18.0-477.51.1.el8_8', 'sp':'8', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-zfcpdump-modules-extra-4.18.0-477.51.1.el8_8', 'sp':'8', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-4.18.0-477.51.1.el8_8', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-perf-4.18.0-477.51.1.el8_8', 'sp':'8', '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' +
    'Extended Update Support repository.\n' +
    'Access to this repository 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_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, 'bpftool / kernel / kernel-core / kernel-cross-headers / etc');
}