RHEL 7 : kernel (RHSA-2024:2004)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2024:2004. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(193779);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/04");

  script_cve_id(
    "CVE-2020-36558",
    "CVE-2023-2002",
    "CVE-2023-4622",
    "CVE-2023-4623",
    "CVE-2023-25775"
  );
  script_xref(name:"RHSA", value:"2024:2004");

  script_name(english:"RHEL 7 : kernel (RHSA-2024:2004)");

  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 7 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2024:2004 advisory.

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

    Security fixes:

    * kernel: use after free in unix_stream_sendpage (CVE-2023-4622)

    * Kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)

    * kernel: irdma: Improper access control (CVE-2023-25775)

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

    * kernel: race condition in VT_RESIZEX ioctl when vc_cons[i].d is already NULL leading to NULL pointer
    dereference (CVE-2020-36558)

    This update also fixes the following bugs:

    * NFS client closes active connection (RHEL-22193)

    * kernel panic at __list_del_entry from smb2_reconnect_server (RHEL-26301)

    * kernel: race condition when call to VT_RESIZEX ioctl and vc_cons[i].d is already NULL, causing a NULL
    pointer dereference. (RHEL-28639)

    * kernel: net/sched: sch_hfsc UAF (RHEL-16458)

    * kernel: irdma: Improper access control (RHEL-6299)

    * The message in RHEL 7 ?stack-protector: Kernel stack is corrupted in:? is triggered because
    perf_trace_buf_prepare() does not verify that per_cpu array perf_trace_buf has allocated per_cpu buffers
    in it. (RHEL-18052)

    * [rhel7] gfs2: Invalid metadata access in punch_hole (RHEL-28785)

    * UDP packets dropped due to SELinux denial (RHEL-27751)

    * Boot fails with kernel panic at acpi_device_hid+0x6 (RHEL-8721)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
    other related information, refer to the CVE page(s) listed in the References section.

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.");
  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=2112693");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2187308");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2231410");
  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=2237760");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_2004.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2fa1aa22");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2024:2004");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL kernel package based on the guidance in RHSA-2024:2004.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:N/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-2023-25775");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(250, 284, 416, 476);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/07/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/04/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/24");

  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: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-bootwrapper");
  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-devel");
  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-kdump");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel");
  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:kernel-tools-libs-devel");
  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:python-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: '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 && '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-2020-36558', 'CVE-2023-2002', 'CVE-2023-4622', 'CVE-2023-4623', 'CVE-2023-25775');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2024:2004');
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

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    ],
    'pkgs': [
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      {'reference':'bpftool-3.10.0-1160.118.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bpftool-3.10.0-1160.118.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-3.10.0-1160.118.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-3.10.0-1160.118.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-3.10.0-1160.118.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-3.10.0-1160.118.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-bootwrapper-3.10.0-1160.118.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-bootwrapper-3.10.0-1160.118.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-3.10.0-1160.118.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-3.10.0-1160.118.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-3.10.0-1160.118.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-3.10.0-1160.118.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-3.10.0-1160.118.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-3.10.0-1160.118.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-3.10.0-1160.118.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-3.10.0-1160.118.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-3.10.0-1160.118.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-3.10.0-1160.118.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-3.10.0-1160.118.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-3.10.0-1160.118.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-kdump-3.10.0-1160.118.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-kdump-devel-3.10.0-1160.118.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-3.10.0-1160.118.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-3.10.0-1160.118.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-3.10.0-1160.118.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-3.10.0-1160.118.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-3.10.0-1160.118.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-3.10.0-1160.118.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-3.10.0-1160.118.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-3.10.0-1160.118.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-3.10.0-1160.118.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-3.10.0-1160.118.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-3.10.0-1160.118.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-3.10.0-1160.118.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-3.10.0-1160.118.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python-perf-3.10.0-1160.118.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python-perf-3.10.0-1160.118.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python-perf-3.10.0-1160.118.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python-perf-3.10.0-1160.118.1.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;
    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_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-bootwrapper / kernel-debug / etc');
}