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nessusThis script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.CENTOS_RHSA-2024-0753.NASL
HistoryFeb 09, 2024 - 12:00 a.m.

CentOS 7 : linux-firmware (RHSA-2024:0753)

2024-02-0900:00:00
This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
83
centos 7
linux-firmware
rhsa-2024:0753
vulnerability
amd cpus
hypervisor
cache
memory integrity
nessus
scanner

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

7.1 High

AI Score

Confidence

Low

0.0005 Low

EPSS

Percentile

16.0%

The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2024:0753 advisory.

  • Improper or unexpected behavior of the INVD instruction in some AMD CPUs may allow an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU leading to a potential loss of guest virtual machine (VM) memory integrity. (CVE-2023-20592)

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 descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2024:0753.
##

include('compat.inc');

if (description)
{
  script_id(190366);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/09");

  script_cve_id("CVE-2023-20592");
  script_xref(name:"RHSA", value:"2024:0753");

  script_name(english:"CentOS 7 : linux-firmware (RHSA-2024:0753)");

  script_set_attribute(attribute:"synopsis", value:
"The remote CentOS Linux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the
RHSA-2024:0753 advisory.

  - Improper or unexpected behavior of the INVD instruction in some AMD CPUs may allow an attacker with a
    malicious hypervisor to affect cache line write-back behavior of the CPU leading to a potential loss of
    guest virtual machine (VM) memory integrity. (CVE-2023-20592)

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://access.redhat.com/errata/RHSA-2024:0753");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/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:N/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-2023-20592");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/11/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/02/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl100-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl1000-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl105-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl135-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl2000-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl2030-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl3160-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl3945-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl4965-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl5000-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl5150-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl6000-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl6000g2a-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl6000g2b-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl6050-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:iwl7260-firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CentOS 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");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm.inc');
include('rhel.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/CentOS/release');
if (isnull(os_release) || 'CentOS' >!< os_release) audit(AUDIT_OS_NOT, 'CentOS');
var os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '7')) audit(AUDIT_OS_NOT, 'CentOS 7.x', 'CentOS ' + os_ver);

if (!get_kb_item('Host/CentOS/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, 'CentOS', cpu);

var pkgs = [
    {'reference':'iwl100-firmware-39.31.5.1-82.el7', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl1000-firmware-39.31.5.1-82.el7', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'iwl105-firmware-18.168.6.1-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl135-firmware-18.168.6.1-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl2000-firmware-18.168.6.1-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl2030-firmware-18.168.6.1-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl3160-firmware-25.30.13.0-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl3945-firmware-15.32.2.9-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl4965-firmware-228.61.2.24-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl5000-firmware-8.83.5.1_1-82.el7', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl5150-firmware-8.24.2.2-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl6000-firmware-9.221.4.1-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl6000g2a-firmware-18.168.6.1-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl6000g2b-firmware-18.168.6.1-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl6050-firmware-41.28.5.1-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'iwl7260-firmware-25.30.13.0-82.el6', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach var package_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;
  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['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (reference && _release) {
    if (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)) 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, 'iwl100-firmware / iwl1000-firmware / iwl105-firmware / etc');
}
VendorProductVersionCPE
centoscentosiwl6000g2a-firmwarep-cpe:/a:centos:centos:iwl6000g2a-firmware
centoscentosiwl6050-firmwarep-cpe:/a:centos:centos:iwl6050-firmware
centoscentos7cpe:/o:centos:centos:7
centoscentosiwl105-firmwarep-cpe:/a:centos:centos:iwl105-firmware
centoscentosiwl3945-firmwarep-cpe:/a:centos:centos:iwl3945-firmware
centoscentosiwl4965-firmwarep-cpe:/a:centos:centos:iwl4965-firmware
centoscentosiwl2030-firmwarep-cpe:/a:centos:centos:iwl2030-firmware
centoscentosiwl100-firmwarep-cpe:/a:centos:centos:iwl100-firmware
centoscentosiwl3160-firmwarep-cpe:/a:centos:centos:iwl3160-firmware
centoscentosiwl135-firmwarep-cpe:/a:centos:centos:iwl135-firmware
Rows per page:
1-10 of 171

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

7.1 High

AI Score

Confidence

Low

0.0005 Low

EPSS

Percentile

16.0%