TencentOS Server 3: freeradius (TSSA-2023:0120)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2023:0120.
##

include('compat.inc');

if (description)
{
  script_id(276101);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/05");

  script_cve_id("CVE-2022-41859", "CVE-2022-41860", "CVE-2022-41861");

  script_name(english:"TencentOS Server 3: freeradius (TSSA-2023:0120)");

  script_set_attribute(attribute:"synopsis", value:
"The remote TencentOS Server 3 host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is,
therefore, affected by multiple vulnerabilities as referenced in the TSSA-2023:0120 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:
      CVE-2022-41859:
      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-2022-41860:
      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-2022-41861:
      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.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

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://mirrors.tencent.com/tlinux/errata/tssa-20230120.xml");
  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:"2023/06/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:tencent:tencentos_server:3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:freeradius");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/etc/os-release", "Host/TencentOS/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'TencentOS' >!< os_product) audit(AUDIT_OS_NOT, 'TencentOS');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'TencentOS');
if (! preg(pattern:"^3([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'TencentOS 3.x', 'TencentOS ' + os_version);

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

var constraints = [
  {
    'release': '3',
    'pkgs': [
      {'reference':'freeradius-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-debugsource-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-devel-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-doc-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-krb5-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-krb5-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-ldap-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-ldap-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-mysql-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-mysql-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-perl-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-perl-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-postgresql-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-postgresql-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-rest-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-rest-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-sqlite-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-sqlite-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-unixODBC-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-unixODBC-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-utils-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-utils-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-freeradius-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-freeradius-debuginfo-3.0.20-14.module+el8.8.0+465+fc8f8486', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    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 &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(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++;
  }
}

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-debuginfo / freeradius-debugsource / etc');
}