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nessusThis script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.REDHAT-RHSA-2021-3392.NASL
HistorySep 02, 2021 - 12:00 a.m.

RHEL 7 : kpatch-patch (RHSA-2021:3392)

2021-09-0200:00:00
This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
27

4.4 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.7 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

33.4%

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:3392 advisory.

  • kernel: race condition for removal of the HCI controller (CVE-2021-32399)

Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2021:3392. The text
# itself is copyright (C) Red Hat, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(152972);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/28");

  script_cve_id("CVE-2021-32399");
  script_xref(name:"RHSA", value:"2021:3392");

  script_name(english:"RHEL 7 : kpatch-patch (RHSA-2021:3392)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update for kpatch-patch.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in
the RHSA-2021:3392 advisory.

  - kernel: race condition for removal of the HCI controller (CVE-2021-32399)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2021/rhsa-2021_3392.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1e247a82");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2021:3392");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1970807");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL kpatch-patch package based on the guidance in RHSA-2021:3392.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-32399");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(362);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/05/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/08/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/09/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_e4s:7.6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_61_1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_61_2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_62_1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_65_1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_66_1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_70_1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_72_1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_76_1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_78_2");
  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) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("linux_alt_patch_detect.nasl", "ssh_get_info.nasl", "redhat_repos.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: '7.6')) audit(AUDIT_OS_NOT, 'Red Hat 7.6', '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 uname_r = get_kb_item("Host/uname-r");
if (empty_or_null(uname_r)) audit(AUDIT_UNKNOWN_APP_VER, "kernel");
if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  rm_kb_item(name:'Host/uptrack-uname-r');
  var cve_list = make_list('CVE-2021-32399');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2021:3392');
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}


var kernel_live_checks = [
  {
    'repo_relative_urls': [
      'content/aus/rhel/server/7/7.6/x86_64/debug',
      'content/aus/rhel/server/7/7.6/x86_64/optional/debug',
      'content/aus/rhel/server/7/7.6/x86_64/optional/os',
      'content/aus/rhel/server/7/7.6/x86_64/optional/source/SRPMS',
      'content/aus/rhel/server/7/7.6/x86_64/os',
      'content/aus/rhel/server/7/7.6/x86_64/source/SRPMS',
      'content/e4s/rhel/power-le/7/7.6/ppc64le/debug',
      'content/e4s/rhel/power-le/7/7.6/ppc64le/highavailability/debug',
      'content/e4s/rhel/power-le/7/7.6/ppc64le/highavailability/os',
      'content/e4s/rhel/power-le/7/7.6/ppc64le/highavailability/source/SRPMS',
      'content/e4s/rhel/power-le/7/7.6/ppc64le/optional/debug',
      'content/e4s/rhel/power-le/7/7.6/ppc64le/optional/os',
      'content/e4s/rhel/power-le/7/7.6/ppc64le/optional/source/SRPMS',
      'content/e4s/rhel/power-le/7/7.6/ppc64le/os',
      'content/e4s/rhel/power-le/7/7.6/ppc64le/source/SRPMS',
      'content/e4s/rhel/server/7/7.6/x86_64/debug',
      'content/e4s/rhel/server/7/7.6/x86_64/highavailability/debug',
      'content/e4s/rhel/server/7/7.6/x86_64/highavailability/os',
      'content/e4s/rhel/server/7/7.6/x86_64/highavailability/source/SRPMS',
      'content/e4s/rhel/server/7/7.6/x86_64/optional/debug',
      'content/e4s/rhel/server/7/7.6/x86_64/optional/os',
      'content/e4s/rhel/server/7/7.6/x86_64/optional/source/SRPMS',
      'content/e4s/rhel/server/7/7.6/x86_64/os',
      'content/e4s/rhel/server/7/7.6/x86_64/source/SRPMS',
      'content/tus/rhel/server/7/7.6/x86_64/debug',
      'content/tus/rhel/server/7/7.6/x86_64/optional/debug',
      'content/tus/rhel/server/7/7.6/x86_64/optional/os',
      'content/tus/rhel/server/7/7.6/x86_64/optional/source/SRPMS',
      'content/tus/rhel/server/7/7.6/x86_64/source/SRPMS'
    ],
    'kernels': {
      '3.10.0-957.61.1.el7.ppc64le': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_61_1-1-5.el7', 'sp':'6', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.61.1.el7.x86_64': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_61_1-1-5.el7', 'sp':'6', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.61.2.el7.ppc64le': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_61_2-1-5.el7', 'sp':'6', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.61.2.el7.x86_64': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_61_2-1-5.el7', 'sp':'6', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.62.1.el7.ppc64le': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_62_1-1-5.el7', 'sp':'6', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.62.1.el7.x86_64': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_62_1-1-5.el7', 'sp':'6', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.65.1.el7.ppc64le': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_65_1-1-5.el7', 'sp':'6', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.65.1.el7.x86_64': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_65_1-1-5.el7', 'sp':'6', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.66.1.el7.ppc64le': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_66_1-1-5.el7', 'sp':'6', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.66.1.el7.x86_64': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_66_1-1-5.el7', 'sp':'6', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.70.1.el7.ppc64le': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_70_1-1-4.el7', 'sp':'6', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.70.1.el7.x86_64': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_70_1-1-4.el7', 'sp':'6', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.72.1.el7.ppc64le': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_72_1-1-2.el7', 'sp':'6', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.72.1.el7.x86_64': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_72_1-1-2.el7', 'sp':'6', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.76.1.el7.ppc64le': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_76_1-1-2.el7', 'sp':'6', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.76.1.el7.x86_64': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_76_1-1-2.el7', 'sp':'6', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.78.2.el7.ppc64le': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_78_2-1-1.el7', 'sp':'6', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
        ]
      },
      '3.10.0-957.78.2.el7.x86_64': {
        'pkgs': [
          {'reference':'kpatch-patch-3_10_0-957_78_2-1-1.el7', 'sp':'6', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE}
        ]
      }
    }
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:kernel_live_checks);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var flag = 0;
var kernel_affected = FALSE;
foreach var kernel_array ( kernel_live_checks ) {
  var repo_relative_urls = NULL;
  if (!empty_or_null(kernel_array['repo_relative_urls'])) repo_relative_urls = kernel_array['repo_relative_urls'];
  var kpatch_details = kernel_array['kernels'][uname_r];
  if (empty_or_null(kpatch_details)) continue;
  kernel_affected = TRUE;
  foreach var pkg ( kpatch_details['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++;
  }
}
# No kpatch details found for the running kernel version
if (!kernel_affected) audit(AUDIT_INST_VER_NOT_VULN, 'kernel', uname_r);

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' +
    'Update Services for SAP Solutions 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, 'kpatch-patch-3_10_0-957_61_1 / kpatch-patch-3_10_0-957_61_2 / etc');
}
VendorProductVersionCPE
redhatrhel_e4s7.6cpe:/o:redhat:rhel_e4s:7.6
redhatenterprise_linuxkpatch-patch-3_10_0-957_61_1p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_61_1
redhatenterprise_linuxkpatch-patch-3_10_0-957_61_2p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_61_2
redhatenterprise_linuxkpatch-patch-3_10_0-957_62_1p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_62_1
redhatenterprise_linuxkpatch-patch-3_10_0-957_65_1p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_65_1
redhatenterprise_linuxkpatch-patch-3_10_0-957_66_1p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_66_1
redhatenterprise_linuxkpatch-patch-3_10_0-957_70_1p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_70_1
redhatenterprise_linuxkpatch-patch-3_10_0-957_72_1p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_72_1
redhatenterprise_linuxkpatch-patch-3_10_0-957_76_1p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_76_1
redhatenterprise_linuxkpatch-patch-3_10_0-957_78_2p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_78_2

4.4 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.7 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

33.4%