RHEL 10 / 9 : Red Hat Ansible Automation Platform 2.7 Product Security and Bug Fix Update (Important) (RHSA-2026:50318)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2026:50318. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(331953);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/04");

  script_cve_id("CVE-2026-40898");
  script_xref(name:"RHSA", value:"2026:50318");

  script_name(english:"RHEL 10 / 9 : Red Hat Ansible Automation Platform 2.7 Product Security and Bug Fix Update (Important) (RHSA-2026:50318)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 10 / 9 host has a package installed that is affected by a vulnerability as referenced
in the RHSA-2026:50318 advisory.

    Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing
    IT automation at scale. IT Managers can provide top-down guidelines on how automation is applied to
    individual teams, while automation developers retain the freedom to write tasks that leverage existing
    knowledge without the overhead. Ansible Automation Platform makes it possible for users across an
    organization to share, vet, and manage automation content by means of a simple, powerful, and agentless
    language.

    Security Fix(es):

    * receptor: quic-go: Denial of Service via excessive memory allocation in HTTP/3 trailers (CVE-2026-40898)

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

    For details about this release, refer to the release notes 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 this issue 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");
  # https://docs.redhat.com/en/documentation/red_hat_ansible_automation_platform/2.7/whats_new-async_updates
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4c3b7e10");
  # https://docs.redhat.com/en/documentation/red_hat_ansible_automation_platform/2.7#Upgrade
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9e24fe11");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2484875");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_50318.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?913be520");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:50318");
  script_set_attribute(attribute:"solution", value:
"Update the affected receptor package.");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-40898");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(770);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:receptor");
  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) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.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: ['10','9'])) audit(AUDIT_OS_NOT, 'Red Hat 10.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': '10',
    'repo_relative_urls': [
      'content/dist/layered/rhel10/aarch64/ansible-automation-platform/2.7/debug',
      'content/dist/layered/rhel10/aarch64/ansible-automation-platform/2.7/os',
      'content/dist/layered/rhel10/aarch64/ansible-automation-platform/2.7/source/SRPMS',
      'content/dist/layered/rhel10/x86_64/ansible-automation-platform/2.7/debug',
      'content/dist/layered/rhel10/x86_64/ansible-automation-platform/2.7/os',
      'content/dist/layered/rhel10/x86_64/ansible-automation-platform/2.7/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'receptor-1.6.7-1.el10ap', 'cpu':'aarch64', 'el_string':'el10ap', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'automation-hub-2.7'},
      {'reference':'receptor-1.6.7-1.el10ap', 'cpu':'x86_64', 'el_string':'el10ap', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'automation-hub-2.7'}
    ]
  },
  {
    'release': '9',
    'repo_relative_urls': [
      'content/dist/layered/rhel9/aarch64/ansible-automation-platform/2.7/debug',
      'content/dist/layered/rhel9/aarch64/ansible-automation-platform/2.7/os',
      'content/dist/layered/rhel9/aarch64/ansible-automation-platform/2.7/source/SRPMS',
      'content/dist/layered/rhel9/x86_64/ansible-automation-platform/2.7/debug',
      'content/dist/layered/rhel9/x86_64/ansible-automation-platform/2.7/os',
      'content/dist/layered/rhel9/x86_64/ansible-automation-platform/2.7/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'receptor-1.6.7-1.el9ap', 'cpu':'aarch64', 'el_string':'el9ap', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'automation-hub-2.7'},
      {'reference':'receptor-1.6.7-1.el9ap', 'cpu':'x86_64', 'el_string':'el9ap', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'automation-hub-2.7'}
    ]
  }
];

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, 'receptor');
}