RHEL 8 / 9 : Satellite 6.16 EUS (RHSA-2026:92858)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2026:92858. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(373932);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/30");

  script_cve_id(
    "CVE-2026-8924",
    "CVE-2026-18660",
    "CVE-2026-19203",
    "CVE-2026-56852",
    "CVE-2026-59646",
    "CVE-2026-63072",
    "CVE-2026-63076",
    "CVE-2026-68494",
    "CVE-2026-68497",
    "CVE-2026-78667",
    "CVE-2026-78669",
    "CVE-2026-84445",
    "CVE-2026-89407",
    "CVE-2026-89425",
    "CVE-2026-94440",
    "CVE-2026-97031",
    "CVE-2026-111943"
  );
  script_xref(name:"IAVA", value:"2026-A-0998");
  script_xref(name:"RHSA", value:"2026:92858");

  script_name(english:"RHEL 8 / 9 : Satellite 6.16 EUS (RHSA-2026:92858)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for Satellite 6.16 EUS.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 / 9 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2026:92858 advisory.

    This advisory provides security fixes for affected packages used by Red Hat Satellite. The updates address
    the vulnerabilities described below.

    Security Fix(es):

    * yggdrasil-worker-forwarder: Denial of Service via malformed RPC requests in gRPC-Go (CVE-2026-84445)
    * yggdrasil-worker-forwarder: Denial of Service via multiple ECH outer extension references in crypto/tls
    (CVE-2026-97031)
    * yggdrasil-worker-forwarder: Denial of Service via crafted HTTP Range headers in Go (CVE-2026-78667)
    * yggdrasil-worker-forwarder: Denial of Service via excessive HTTP/2 SETTINGS frames in net/http
    (CVE-2026-78669)
    * yggdrasil-worker-forwarder: Man-in-the-middle attacks via untrusted intermediate certificates in
    crypto/x509 (CVE-2026-111943)
    * openvox-server: Denial of Service via unchecked DTLS handshake reassembler buffer allocation in Bouncy
    Castle for Java (CVE-2026-59646)
    * openvox-server: CPU Denial of Service via unbounded numeric parsing in jackson-databind (CVE-2026-68497)
    * openvox-server: HTTP request smuggling via crafted chunked requests in Jetty (CVE-2026-19203)
    * openvox-server: Denial of Service via regular expression backtracking in jackson-core (CVE-2026-89407)
    * openvox-server: Denial of Service via unbounded StringBuilder growth during malformed token processing
    in jackson-core (CVE-2026-89425)
    * openvox-server: Access control bypass via case-sensitive host filtering in Eclipse Jetty
    (CVE-2026-18660)
    * openvox-agent: heap buffer overflow in CMS key unwrapping (CVE-2026-63072)
    * openvox-agent: invalid pointer dereference in CMP server via crafted protectionAlg (CVE-2026-63076)
    * openvox-agent: curl: Cookie injection via malicious HTTP server using super cookies (CVE-2026-8924)
    * puppet-agent: curl: Cookie injection via malicious HTTP server using super cookies (CVE-2026-8924)
    * puppet-agent: heap buffer overflow in CMS key unwrapping (CVE-2026-63072)
    * puppetserver: Jackson-core: Denial of Service via regular expression backtracking (CVE-2026-89407)
    * puppetserver: Jetty: HTTP request smuggling via crafted chunked requests (CVE-2026-19203)
    * puppetserver: jackson-databind: CPU Denial of Service via unbounded numeric parsing (CVE-2026-68497)
    * yggdrasil-worker-forwarder: golang: Denial of Service via memory limit bypass in multipart form parsing
    (CVE-2026-94440)
    * openvox-server: jackson-core: Denial of Service via incomplete fix in async JSON parser (CVE-2026-68494)
    * yggdrasil-worker-forwarder: golang.org/x/text: Denial of Service via invalid UTF-8 input
    (CVE-2026-56852)

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.");
  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=2496765");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2504233");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2510193");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2511026");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2517560");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2517561");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2529768");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2531964");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2533175");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2538720");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2539084");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2548334");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2548336");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2548341");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2548344");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2553134");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2556068");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_92858.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d4fea258");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:92858");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL Satellite 6.16 EUS package based on the guidance in RHSA-2026:92858.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/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:L/VA:N/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-59646");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-18660");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(125, 131, 178, 295, 400, 444, 476, 565, 770, 787, 835, 1050, 1333);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openvox-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openvox-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:yggdrasil-worker-forwarder");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl", "redhat_repos.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm2.inc');
include('rhel.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) || 'Red Hat' >!< os_product) audit(AUDIT_OS_NOT, 'Red Hat');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
if (!rhel_check_release_list(operator: 'ge', os_version: os_version, rhel_versions: ['8','9'])) audit(AUDIT_OS_NOT, 'Red Hat 8.x / 9.x', 'Red Hat ' + os_version);

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 = [
  {
    'release': '8',
    'repo_relative_urls': [
      'content/dist/layered/rhel8/x86_64/sat-capsule/6.16/debug',
      'content/dist/layered/rhel8/x86_64/sat-capsule/6.16/os',
      'content/dist/layered/rhel8/x86_64/sat-capsule/6.16/source/SRPMS',
      'content/dist/layered/rhel8/x86_64/satellite/6.16/debug',
      'content/dist/layered/rhel8/x86_64/satellite/6.16/os',
      'content/dist/layered/rhel8/x86_64/satellite/6.16/source/SRPMS',
      'content/eus/rhel8/8/x86_64/sat-capsule/6.16/debug',
      'content/eus/rhel8/8/x86_64/sat-capsule/6.16/os',
      'content/eus/rhel8/8/x86_64/sat-capsule/6.16/source/SRPMS',
      'content/eus/rhel8/8/x86_64/satellite/6.16/debug',
      'content/eus/rhel8/8/x86_64/satellite/6.16/os',
      'content/eus/rhel8/8/x86_64/satellite/6.16/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'openvox-agent-8.31.1-1.el8sat', 'cpu':'x86_64', 'el_string':'el8sat', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'satellite-6', 'cves':['CVE-2026-8924', 'CVE-2026-63072', 'CVE-2026-63076']},
      {'reference':'openvox-server-8.17.0-1.el8sat', 'el_string':'el8sat', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'satellite-6', 'cves':['CVE-2026-18660', 'CVE-2026-19203', 'CVE-2026-59646', 'CVE-2026-68494', 'CVE-2026-68497', 'CVE-2026-89407', 'CVE-2026-89425']}
    ]
  },
  {
    'release': '8',
    'repo_relative_urls': [
      'content/dist/layered/rhel8/x86_64/satellite/6.16/debug',
      'content/dist/layered/rhel8/x86_64/satellite/6.16/os',
      'content/dist/layered/rhel8/x86_64/satellite/6.16/source/SRPMS',
      'content/eus/rhel8/8/x86_64/satellite/6.16/debug',
      'content/eus/rhel8/8/x86_64/satellite/6.16/os',
      'content/eus/rhel8/8/x86_64/satellite/6.16/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'yggdrasil-worker-forwarder-0.1.1-1.el8sat', 'cpu':'x86_64', 'el_string':'el8sat', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'satellite-6', 'cves':['CVE-2026-56852', 'CVE-2026-78667', 'CVE-2026-78669', 'CVE-2026-84445', 'CVE-2026-94440', 'CVE-2026-97031', 'CVE-2026-111943']}
    ]
  },
  {
    'release': '9',
    'repo_relative_urls': [
      'content/dist/layered/rhel9/x86_64/sat-capsule/6.16/debug',
      'content/dist/layered/rhel9/x86_64/sat-capsule/6.16/os',
      'content/dist/layered/rhel9/x86_64/sat-capsule/6.16/source/SRPMS',
      'content/dist/layered/rhel9/x86_64/satellite/6.16/debug',
      'content/dist/layered/rhel9/x86_64/satellite/6.16/os',
      'content/dist/layered/rhel9/x86_64/satellite/6.16/source/SRPMS',
      'content/eus/rhel9/9/x86_64/sat-capsule/6.16/debug',
      'content/eus/rhel9/9/x86_64/sat-capsule/6.16/os',
      'content/eus/rhel9/9/x86_64/sat-capsule/6.16/source/SRPMS',
      'content/eus/rhel9/9/x86_64/satellite/6.16/debug',
      'content/eus/rhel9/9/x86_64/satellite/6.16/os',
      'content/eus/rhel9/9/x86_64/satellite/6.16/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'openvox-agent-8.31.1-1.el9sat', 'cpu':'x86_64', 'el_string':'el9sat', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'satellite-6', 'cves':['CVE-2026-8924', 'CVE-2026-63072', 'CVE-2026-63076']},
      {'reference':'openvox-server-8.17.0-1.el9sat', 'el_string':'el9sat', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'satellite-6', 'cves':['CVE-2026-18660', 'CVE-2026-19203', 'CVE-2026-59646', 'CVE-2026-68494', 'CVE-2026-68497', 'CVE-2026-89407', 'CVE-2026-89425']}
    ]
  },
  {
    'release': '9',
    'repo_relative_urls': [
      'content/dist/layered/rhel9/x86_64/satellite/6.16/debug',
      'content/dist/layered/rhel9/x86_64/satellite/6.16/os',
      'content/dist/layered/rhel9/x86_64/satellite/6.16/source/SRPMS',
      'content/eus/rhel9/9/x86_64/satellite/6.16/debug',
      'content/eus/rhel9/9/x86_64/satellite/6.16/os',
      'content/eus/rhel9/9/x86_64/satellite/6.16/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'yggdrasil-worker-forwarder-0.1.1-1.el9sat', 'cpu':'x86_64', 'el_string':'el9sat', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'satellite-6', 'cves':['CVE-2026-56852', 'CVE-2026-78667', 'CVE-2026-78669', 'CVE-2026-84445', 'CVE-2026-94440', 'CVE-2026-97031', 'CVE-2026-111943']}
    ]
  }
];

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 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 repo_relative_urls;
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;
  }

  if (!empty_or_null(constraint['repo_relative_urls'])) repo_relative_urls = constraint['repo_relative_urls'];

  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 &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!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)
{
  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, 'openvox-agent / openvox-server / yggdrasil-worker-forwarder');
}