Oracle Linux 8 : rsyslog (ELSA-2020-1702)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2020-1702.
##

include('compat.inc');

if (description)
{
  script_id(180953);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/10/23");

  script_cve_id("CVE-2019-17041", "CVE-2019-17042");

  script_name(english:"Oracle Linux 8 : rsyslog (ELSA-2020-1702)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2020-1702 advisory.

    [8.1911.0-3]
    RHEL 8.2.0 ERRATUM
    - added patch reverting rejecting expired certs by default
      resolves: rhbz#1782353
    - added patch silencing false errors on config.enabled statement
      resolves: rhbz#1659383

    [8.1911.0-2]
    RHEL 8.2.0 ERRATUM
    - cleaned old patches, fixed patch names
      resolves: rhbz#1740683

    [8.1911.0-1]
    RHEL 8.2.0 ERRATUM
    - rebased to 8.1911.0 upstream version, removed, previously
      upstreamed patches
      resolves: rhbz#1740683
      resolves: rhbz#1659383
      resolves: rhbz#1746876
      resolves: rhbz#1676559
      resolves: rhbz#1692072
      resolves: rhbz#1692073
      resolves: rhbz#1692074
      resolves: rhbz#1699242
      resolves: rhbz#1738213
      resolves: rhbz#1744691
      resolves: rhbz#1755218
      resolves: rhbz#1768321
      resolves: rhbz#1768324
    - added patch fixing imfile stefiles naming
      resolves: rhbz#1763757

Tenable has extracted the preceding description block directly from the Oracle 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://linux.oracle.com/errata/ELSA-2020-1702.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_supplemental", value:"CVSS:4.0/U:Red");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-17042");

  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:"2019/10/07");
  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:rsyslog");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-crypto");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-elasticsearch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-gssapi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-kafka");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-mmaudit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-mmjsonparse");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-mmkubernetes");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-mmnormalize");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-mmsnmptrapd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-relp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:rsyslog-snmp");
  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) 2023-2024 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 pkgs = [
    {'reference':'rsyslog-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-crypto-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-doc-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-elasticsearch-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-gnutls-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-gssapi-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-kafka-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mmaudit-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mmjsonparse-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mmkubernetes-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mmnormalize-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mmsnmptrapd-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mysql-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-pgsql-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-relp-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-snmp-8.1911.0-3.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-crypto-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-doc-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-elasticsearch-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-gnutls-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-gssapi-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-kafka-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mmaudit-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mmjsonparse-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mmkubernetes-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mmnormalize-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mmsnmptrapd-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-mysql-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-pgsql-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-relp-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'rsyslog-snmp-8.1911.0-3.el8', 'cpu':'x86_64', 'release':'8', '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;
  var exists_check = 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 (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && _release) {
    if (exists_check) {
        if (rpm_exists(release:_release, rpm:exists_check) && 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++;
    } else {
        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_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, 'rsyslog / rsyslog-crypto / rsyslog-doc / etc');
}