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nessusThis script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.REDHAT_UNPATCHED_KERNEL-RHEL8.NASL
HistoryJun 03, 2024 - 12:00 a.m.

RHEL 8 : kernel (Unpatched Vulnerability)

2024-06-0300:00:00
This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
2
rhel 8
kernel
unpatched vulnerability
btrfs_map_block
btf_dump_name_dups
denial of service
ata qc leak

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

8

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.8

Confidence

High

EPSS

0.008

Percentile

81.8%

The remote Redhat Enterprise Linux 8 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  • kernel: out-of-bounds write in __btrfs_map_block in fs/btrfs/volumes.c (CVE-2019-19816)

  • Kernel: use-after-free in btf_dump_name_dups in tools/lib/bpf/btf_dump.c (CVE-2022-3534)

  • drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the relevance of this report because the failure can only occur for physically proximate attackers who unplug SAS Host Bus Adapter cables (CVE-2018-10021)

Note that Nessus has not tested for these issues but has instead relied on the package manager’s report that the package is installed.

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

include('compat.inc');

if (description)
{
  script_id(199272);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/15");

  script_cve_id(
    "CVE-2018-7273",
    "CVE-2018-8043",
    "CVE-2018-10021",
    "CVE-2018-15594",
    "CVE-2018-16862",
    "CVE-2018-17977",
    "CVE-2019-2054",
    "CVE-2019-11184",
    "CVE-2019-12380",
    "CVE-2019-15217",
    "CVE-2019-15218",
    "CVE-2019-15219",
    "CVE-2019-15291",
    "CVE-2019-15807",
    "CVE-2019-16089",
    "CVE-2019-16229",
    "CVE-2019-16230",
    "CVE-2019-18806",
    "CVE-2019-19039",
    "CVE-2019-19054",
    "CVE-2019-19066",
    "CVE-2019-19076",
    "CVE-2019-19080",
    "CVE-2019-19081",
    "CVE-2019-19082",
    "CVE-2019-19083",
    "CVE-2019-19462",
    "CVE-2019-19816",
    "CVE-2019-19965",
    "CVE-2020-8694",
    "CVE-2020-10781",
    "CVE-2020-11494",
    "CVE-2020-11609",
    "CVE-2020-12768",
    "CVE-2020-12769",
    "CVE-2020-13844",
    "CVE-2020-14304",
    "CVE-2020-25639",
    "CVE-2021-20320",
    "CVE-2021-28711",
    "CVE-2021-28712",
    "CVE-2021-28713",
    "CVE-2021-38199",
    "CVE-2021-45402",
    "CVE-2021-47041",
    "CVE-2022-0264",
    "CVE-2022-2905",
    "CVE-2022-3344",
    "CVE-2022-3534",
    "CVE-2022-3542",
    "CVE-2022-3903",
    "CVE-2022-41850",
    "CVE-2023-0045",
    "CVE-2023-1076",
    "CVE-2023-3358",
    "CVE-2023-7042",
    "CVE-2023-31085",
    "CVE-2023-37454",
    "CVE-2023-47233",
    "CVE-2024-0564",
    "CVE-2024-0607"
  );

  script_name(english:"RHEL 8 : kernel (Unpatched Vulnerability)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat 8 host is affected by multiple vulnerabilities that will not be patched.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has one or more packages installed that are affected by multiple
vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - kernel: out-of-bounds write in __btrfs_map_block in fs/btrfs/volumes.c (CVE-2019-19816)

  - Kernel: use-after-free in btf_dump_name_dups in tools/lib/bpf/btf_dump.c (CVE-2022-3534)

  - drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial
    of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the
    relevance of this report because the failure can only occur for physically proximate attackers who unplug
    SAS Host Bus Adapter cables (CVE-2018-10021)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package
is installed.");
  script_set_attribute(attribute:"solution", value:
"The vendor has acknowledged the vulnerabilities but no solution has been provided. Refer to the vendor for remediation
guidance.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:A/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-2019-19816");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-3534");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/06/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  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-rt");
  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("global_settings/vendor_unpatched"))
exit(0, "Unpatched Vulnerabilities Detection not active.");

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: '8')) audit(AUDIT_OS_NOT, 'Red Hat 8.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);

var constraints = [
  {
    'pkgs': [
      {'reference':'kernel', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'kernel', 'cves':['CVE-2018-7273', 'CVE-2018-8043', 'CVE-2018-10021', 'CVE-2018-15594', 'CVE-2018-16862', 'CVE-2018-17977', 'CVE-2019-2054', 'CVE-2019-11184', 'CVE-2019-12380', 'CVE-2019-15217', 'CVE-2019-15218', 'CVE-2019-15291', 'CVE-2019-15807', 'CVE-2019-16089', 'CVE-2019-16229', 'CVE-2019-16230', 'CVE-2019-18806', 'CVE-2019-19039', 'CVE-2019-19054', 'CVE-2019-19066', 'CVE-2019-19076', 'CVE-2019-19080', 'CVE-2019-19081', 'CVE-2019-19082', 'CVE-2019-19083', 'CVE-2019-19462', 'CVE-2019-19965', 'CVE-2020-8694', 'CVE-2020-10781', 'CVE-2020-11494', 'CVE-2020-11609', 'CVE-2020-12768', 'CVE-2020-12769', 'CVE-2020-13844', 'CVE-2020-14304', 'CVE-2020-25639', 'CVE-2021-20320', 'CVE-2021-28711', 'CVE-2021-28712', 'CVE-2021-28713', 'CVE-2021-38199', 'CVE-2021-45402', 'CVE-2021-47041', 'CVE-2022-0264', 'CVE-2022-2905', 'CVE-2022-3344', 'CVE-2022-3534', 'CVE-2022-3542', 'CVE-2022-3903', 'CVE-2022-41850', 'CVE-2023-0045', 'CVE-2023-1076', 'CVE-2023-3358', 'CVE-2023-7042', 'CVE-2023-31085', 'CVE-2023-37454', 'CVE-2023-47233', 'CVE-2024-0564', 'CVE-2024-0607']},
      {'reference':'kernel-rt', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'kernel-rt', 'cves':['CVE-2018-16862', 'CVE-2018-17977', 'CVE-2019-11184', 'CVE-2019-12380', 'CVE-2019-15217', 'CVE-2019-15218', 'CVE-2019-15219', 'CVE-2019-15291', 'CVE-2019-15807', 'CVE-2019-16089', 'CVE-2019-16229', 'CVE-2019-16230', 'CVE-2019-18806', 'CVE-2019-19039', 'CVE-2019-19054', 'CVE-2019-19066', 'CVE-2019-19076', 'CVE-2019-19080', 'CVE-2019-19081', 'CVE-2019-19082', 'CVE-2019-19083', 'CVE-2019-19462', 'CVE-2019-19816', 'CVE-2019-19965', 'CVE-2020-8694', 'CVE-2020-10781', 'CVE-2020-11494', 'CVE-2020-11609', 'CVE-2020-12768', 'CVE-2020-14304', 'CVE-2020-25639', 'CVE-2021-20320', 'CVE-2021-28711', 'CVE-2021-28712', 'CVE-2021-28713', 'CVE-2021-45402', 'CVE-2022-0264', 'CVE-2022-2905', 'CVE-2022-3344', 'CVE-2022-3534', 'CVE-2022-3542', 'CVE-2022-3903', 'CVE-2022-41850', 'CVE-2023-1076', 'CVE-2023-3358', 'CVE-2023-7042', 'CVE-2023-37454', 'CVE-2023-47233', 'CVE-2024-0564', 'CVE-2024-0607']}
    ]
  }
];


var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  var enterprise_linux_flag = rhel_repo_urls_has_content_dist_rhel(repo_urls:repo_relative_urls);
  foreach var pkg ( constraint_array['pkgs'] ) {
    var unpatched_pkg = NULL;
    var _release = NULL;
    var sp = NULL;
    var el_string = NULL;
    var rpm_spec_vers_cmp = NULL;
    var exists_check = NULL;
    var cves = NULL;
    if (!empty_or_null(pkg['unpatched_pkg'])) unpatched_pkg = pkg['unpatched_pkg'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (unpatched_pkg &&
        _release &&
        (!exists_check || rpm_exists(release:_release, rpm:exists_check)) &&
        unpatched_package_exists(release:_release, package:unpatched_pkg, cves: cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : unpatched_packages_report()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kernel / kernel-rt');
}
VendorProductVersionCPE
redhatenterprise_linux8cpe:/o:redhat:enterprise_linux:8
redhatenterprise_linuxkernelp-cpe:/a:redhat:enterprise_linux:kernel
redhatenterprise_linuxkernel-rtp-cpe:/a:redhat:enterprise_linux:kernel-rt

References

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

8

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.8

Confidence

High

EPSS

0.008

Percentile

81.8%