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nessusThis script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.SUSE_SU-2023-2691-1.NASL
HistoryJun 29, 2023 - 12:00 a.m.

SUSE SLES15 / openSUSE 15 Security Update : kubernetes1.23 (SUSE-SU-2023:2691-1)

2023-06-2900:00:00
This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
4
suse sles15
opensuse 15
kubernetes1.23
vulnerability
kubelet
seccomp profile
cve-2023-2431
nessus scanner

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

0.0004 Low

EPSS

Percentile

15.7%

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:2691-1 advisory.

  • A security issue was discovered in Kubelet that allows pods to bypass the seccomp profile enforcement.
    Pods that use localhost type for seccomp profile but specify an empty profile field, are affected by this issue. In this scenario, this vulnerability allows the pod to run in unconfined (seccomp disabled) mode.
    This bug affects Kubelet. (CVE-2023-2431)

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 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2023:2691-1. The text itself
# is copyright (C) SUSE.
##

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

if (description)
{
  script_id(177718);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/14");

  script_cve_id("CVE-2023-2431");
  script_xref(name:"SuSE", value:"SUSE-SU-2023:2691-1");

  script_name(english:"SUSE SLES15 / openSUSE 15 Security Update : kubernetes1.23 (SUSE-SU-2023:2691-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability
as referenced in the SUSE-SU-2023:2691-1 advisory.

  - A security issue was discovered in Kubelet that allows pods to bypass the seccomp profile enforcement.
    Pods that use localhost type for seccomp profile but specify an empty profile field, are affected by this
    issue. In this scenario, this vulnerability allows the pod to run in unconfined (seccomp disabled) mode.
    This bug affects Kubelet. (CVE-2023-2431)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1212493");
  script_set_attribute(attribute:"see_also", value:"https://lists.suse.com/pipermail/sle-updates/2023-June/030117.html");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-2431");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:C/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-2431");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/06/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/06/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/06/29");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kubernetes1.23-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kubernetes1.23-client-common");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item("Host/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES|SUSE)") audit(AUDIT_OS_NOT, "SUSE / openSUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+|SUSE([\d.]+))", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE / openSUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES15|SLES_SAP15|SUSE15\.5)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES15 / SLES_SAP15 / openSUSE 15', 'SUSE / openSUSE (' + os_ver + ')');

if (!get_kb_item("Host/SuSE/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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE / openSUSE (' + os_ver + ')', cpu);

var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLES15" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP5", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP5", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'kubernetes1.23-client-1.23.17-150500.3.6.1', 'sp':'5', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'kubernetes1.23-client-common-1.23.17-150500.3.6.1', 'sp':'5', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'kubernetes1.23-client-1.23.17-150500.3.6.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-containers-release-15.5', 'sles-release-15.5']},
    {'reference':'kubernetes1.23-client-common-1.23.17-150500.3.6.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-containers-release-15.5', 'sles-release-15.5']},
    {'reference':'kubernetes1.23-apiserver-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kubernetes1.23-client-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kubernetes1.23-client-bash-completion-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kubernetes1.23-client-common-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kubernetes1.23-client-fish-completion-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kubernetes1.23-controller-manager-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kubernetes1.23-kubeadm-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kubernetes1.23-kubelet-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kubernetes1.23-kubelet-common-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kubernetes1.23-proxy-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
    {'reference':'kubernetes1.23-scheduler-1.23.17-150500.3.6.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var exists_check = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (exists_check) {
      var check_flag = 0;
      foreach var check (exists_check) {
        if (!rpm_exists(release:_release, rpm:check)) continue;
        check_flag++;
      }
      if (!check_flag) continue;
    }
    if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kubernetes1.23-apiserver / kubernetes1.23-client / etc');
}
VendorProductVersionCPE
novellsuse_linuxkubernetes1.23-clientp-cpe:/a:novell:suse_linux:kubernetes1.23-client
novellsuse_linuxkubernetes1.23-client-commonp-cpe:/a:novell:suse_linux:kubernetes1.23-client-common
novellsuse_linux15cpe:/o:novell:suse_linux:15

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

0.0004 Low

EPSS

Percentile

15.7%