CentOS 8 : freeradius:3.0 (CESA-2023:2870)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# Red Hat Security Advisory RHSA-2023:2870. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(175889);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/08");

  script_cve_id("CVE-2022-41859", "CVE-2022-41860", "CVE-2022-41861");
  script_xref(name:"RHSA", value:"2023:2870");

  script_name(english:"CentOS 8 : freeradius:3.0 (CESA-2023:2870)");

  script_set_attribute(attribute:"synopsis", value:
"The remote CentOS host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
CESA-2023:2870 advisory.

  - In freeradius, the EAP-PWD function compute_password_element() leaks information about the password which
    allows an attacker to substantially reduce the size of an offline dictionary attack. (CVE-2022-41859)

  - In freeradius, when an EAP-SIM supplicant sends an unknown SIM option, the server will try to look that
    option up in the internal dictionaries. This lookup will fail, but the SIM code will not check for that
    failure. Instead, it will dereference a NULL pointer, and cause the server to crash. (CVE-2022-41860)

  - A flaw was found in freeradius. A malicious RADIUS client or home server can send a malformed abinary
    attribute which can cause the server to crash. (CVE-2022-41861)

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/errata/RHSA-2023:2870");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/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:N/UI:N/S:U/C:H/I:N/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-2022-41859");

  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:"2022/12/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/05/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/05/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8-stream");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-krb5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-postgresql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-rest");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-sqlite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-unixODBC");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:freeradius-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:python3-freeradius");
  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) 2023-2024 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(?: Stream)?(?: Linux)? release ([0-9]+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS');
os_ver = os_ver[1];
if ('CentOS Stream' >!< os_release) audit(AUDIT_OS_NOT, 'CentOS 8-Stream');
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '8')) audit(AUDIT_OS_NOT, 'CentOS 8.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 module_ver = get_kb_item('Host/RedHat/appstream/freeradius');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module freeradius:3.0');
if ('3.0' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module freeradius:' + module_ver);

var appstreams = {
    'freeradius:3.0': [
      {'reference':'freeradius-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-devel-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-devel-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-doc-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-doc-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-krb5-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-krb5-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-ldap-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-ldap-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-mysql-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-mysql-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-perl-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-perl-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-postgresql-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-postgresql-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-rest-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-rest-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-sqlite-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-sqlite-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-unixODBC-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-unixODBC-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-utils-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-utils-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-freeradius-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-freeradius-3.0.20-14.module_el8.8.0+1237+51da6996', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
    ]
};

var flag = 0;
appstreams_found = 0;
foreach module (keys(appstreams)) {
  var appstream = NULL;
  var appstream_name = NULL;
  var appstream_version = NULL;
  var appstream_split = split(module, sep:':', keep:FALSE);
  if (!empty_or_null(appstream_split)) {
    appstream_name = appstream_split[0];
    appstream_version = appstream_split[1];
    if (!empty_or_null(appstream_name)) appstream = get_one_kb_item('Host/RedHat/appstream/' + appstream_name);
  }
  if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
    appstreams_found++;
    foreach package_array ( appstreams[module] ) {
      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 = 'CentOS-' + 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 (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module freeradius:3.0');

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      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, 'freeradius / freeradius-devel / freeradius-doc / freeradius-krb5 / etc');
}