Oracle Linux 8 : freeradius:3.0 (ELSA-2020-1672)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2020-1672.
##

include('compat.inc');

if (description)
{
  script_id(180961);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/07");

  script_cve_id("CVE-2019-13456");

  script_name(english:"Oracle Linux 8 : freeradius:3.0 (ELSA-2020-1672)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the
ELSA-2020-1672 advisory.

  - In FreeRADIUS 3.0 through 3.0.19, on average 1 in every 2048 EAP-pwd handshakes fails because the password
    element cannot be found within 10 iterations of the hunting and pecking loop. This leaks information that
    an attacker can use to recover the password of any user. This information leakage is similar to the
    Dragonblood attack and CVE-2019-9494. (CVE-2019-13456)

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://linux.oracle.com/errata/ELSA-2020-1672.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-13456");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/11/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-krb5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-postgresql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-rest");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-sqlite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-unixODBC");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:freeradius-utils");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle Linux 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/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_release = get_kb_item("Host/RedHat/release");
if (isnull(os_release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 8', 'Oracle Linux ' + 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$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', 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-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-devel-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-doc-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-krb5-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-ldap-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-mysql-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-perl-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-postgresql-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-rest-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-sqlite-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-unixODBC-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-utils-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-devel-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-doc-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-krb5-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-ldap-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-mysql-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-perl-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-postgresql-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-rest-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-sqlite-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-unixODBC-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'freeradius-utils-3.0.17-7.module+el8.2.0+5505+9f97be83', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
    ]
};

var flag = 0;
var appstreams_found = 0;
foreach var 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 var 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 = 'EL' + 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_NOTE,
      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 / etc');
}