RHEL 6 : Red Hat Single Sign-On 7.3.4 security update on RHEL 6 (Important) (RHSA-2019:3044)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:3044. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('compat.inc');

if (description)
{
  script_id(129863);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/03");

  script_cve_id(
    "CVE-2019-10184",
    "CVE-2019-12086",
    "CVE-2019-12814",
    "CVE-2019-14379",
    "CVE-2019-14820",
    "CVE-2019-14832"
  );
  script_xref(name:"RHSA", value:"2019:3044");

  script_name(english:"RHEL 6 : Red Hat Single Sign-On 7.3.4 security update on RHEL 6 (Important) (RHSA-2019:3044)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for Red Hat Single Sign-On 7.3.4.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2019:3044 advisory.

    Red Hat Single Sign-On 7.3 is a standalone server, based on the Keycloak project, that provides
    authentication and standards-based single sign-on capabilities for web and mobile applications.

    This release of Red Hat Single Sign-On 7.3.4 on RHEL 6 serves as a replacement for Red Hat Single Sign-On
    7.3.3, and includes bug fixes and enhancements, which are documented in the Release Notes document linked
    to in the References.

    Security Fix(es):

    * keycloak: cross-realm user access auth bypass (CVE-2019-14832)

    * keycloak: adapter endpoints are exposed via arbitrary URLs (CVE-2019-14820)

    * jackson-databind: polymorphic typing issue allows attacker to read arbitrary local files on the server
    via crafted JSON message (CVE-2019-12814)

    * jackson-databind: default typing mishandling leading to remote code execution (CVE-2019-14379)

    * jackson-databind: polymorphic typing issue allows attacker to read arbitrary local files on the server
    (CVE-2019-12086)

    * undertow: Information leak in requests for directories without trailing slashes (CVE-2019-10184)

    For more details about the security issue(s), including the impact, a CVSS score, and other related
    information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2019/rhsa-2019_3044.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3afd6dfe");
  # https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.3/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?93d4a9a3");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2019:3044");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1649870");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1713068");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1713468");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1725795");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1737517");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1749487");
  script_set_attribute(attribute:"see_also", value:"https://issues.redhat.com/browse/KEYCLOAK-11454");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL Red Hat Single Sign-On 7.3.4 package based on the guidance in RHSA-2019:3044.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-14379");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(200, 502, 862, 863);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-sso7-keycloak");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-sso7-keycloak-server");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("redhat_repos.nasl", "ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '6')) audit(AUDIT_OS_NOT, 'Red Hat 6.x', 'Red Hat ' + 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$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
  {
    'repo_relative_urls': [
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.1/debug',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.1/os',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.1/source/SRPMS',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.2/debug',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.2/os',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.2/source/SRPMS',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.3/debug',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.3/os',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.3/source/SRPMS',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.4/debug',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.4/os',
      'content/dist/rhel/server/6/6Server/x86_64/rh-sso/7.4/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'rh-sso7-keycloak-4.8.13-1.Final_redhat_00001.1.el6sso', 'release':'6', 'el_string':'el6sso', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rh-sso'},
      {'reference':'rh-sso7-keycloak-server-4.8.13-1.Final_redhat_00001.1.el6sso', 'release':'6', 'el_string':'el6sso', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rh-sso'}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
  foreach var pkg ( constraint_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;
    var cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    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 &&
        _release &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || 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, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'rh-sso7-keycloak / rh-sso7-keycloak-server');
}