Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : RabbitMQ Server vulnerabilities (USN-8933-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8933-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(367209);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/19");

  script_cve_id(
    "CVE-2026-66070",
    "CVE-2026-66077",
    "CVE-2026-66079",
    "CVE-2026-67231",
    "CVE-2026-67232",
    "CVE-2026-67235",
    "CVE-2026-67236",
    "CVE-2026-67237",
    "CVE-2026-67238",
    "CVE-2026-67239",
    "CVE-2026-67404",
    "CVE-2026-67409"
  );
  script_xref(name:"USN", value:"8933-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : RabbitMQ Server vulnerabilities (USN-8933-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS host has a package installed
that is affected by multiple vulnerabilities as referenced in the USN-8933-1 advisory.

    It was discovered that RabbitMQ Server incorrectly handled CORS wildcard origin configuration. An attacker
    could possibly use this issue to cause a cross-site request forgery attack. This issue only affected
    Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.
    (CVE-2026-66070)

    It was discovered that RabbitMQ Server incorrectly handled TLS peer-certificate DNs in the management UI.
    An attacker could possibly use this issue to cause a cross-site scripting attack. (CVE-2026-66077)

    It was discovered that RabbitMQ Server incorrectly handled AMQP 1.0 arrays with zero-width element
    constructors. An attacker could possibly use this issue to cause a denial of service. This issue only
    affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-66079)

    It was discovered that RabbitMQ Server trust-store plugin incorrectly validated client certificates. An
    attacker could possibly use this issue to bypass TLS client authentication. This issue only affected
    Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.
    (CVE-2026-67231)

    It was discovered that RabbitMQ Server incorrectly handled WebSocket frame sizes. An attacker could
    possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu
    22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-67232)

    It was discovered that RabbitMQ Server incorrectly handled content-header body sizes. An attacker could
    possibly use this issue to cause a denial of service. (CVE-2026-67235)

    It was discovered that RabbitMQ Server incorrectly stored credentials in an insecure cookie. An attacker
    could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 20.04 LTS,
    Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-67236)

    It was discovered that RabbitMQ Server incorrectly handled OAuth bearer tokens in bootstrap JavaScript. An
    attacker could possibly use this issue to cause a cross-site scripting attack. This issue only affected
    Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-67237)

    It was discovered that RabbitMQ Server incorrectly handled ETF-encoded PID node names. An attacker could
    possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu
    24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-67238)

    It was discovered that RabbitMQ Server incorrectly handled TLS peer-certificate DNs in the stream
    management UI. An attacker could possibly use this issue to cause a cross-site scripting attack. This
    issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-67239)

    It was discovered that RabbitMQ Server incorrectly handled OAuth2 SSL options when no CA certificates were
    available. An attacker could possibly use this issue to bypass TLS verification. This issue only affected
    Ubuntu 26.04 LTS. (CVE-2026-67404)

    It was discovered that RabbitMQ Server incorrectly validated HTTP response status codes when fetching JWKS
    keys. An attacker could possibly use this issue to cause a denial of service. This issue only affected
    Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-67409)

Tenable has extracted the preceding description block directly from the Ubuntu 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://ubuntu.com/security/notices/USN-8933-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected rabbitmq-server package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/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:N/AC:L/PR:L/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:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/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-2026-67236");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-67404");

  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:"2026/09/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:26.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:rabbitmq-server");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release || '24.04' >< os_release || '26.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04 / 22.04 / 24.04 / 26.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) 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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '16.04', 'pkgname': 'rabbitmq-server', 'pkgver': '3.5.7-1ubuntu0.16.04.4+esm3', 'cves': ['CVE-2026-66077', 'CVE-2026-67235']},
    {'osver': '18.04', 'pkgname': 'rabbitmq-server', 'pkgver': '3.6.10-1ubuntu0.5+esm1', 'cves': ['CVE-2026-66070', 'CVE-2026-66077', 'CVE-2026-67231', 'CVE-2026-67235']},
    {'osver': '20.04', 'pkgname': 'rabbitmq-server', 'pkgver': '3.8.3-0ubuntu0.3+esm2', 'cves': ['CVE-2026-66070', 'CVE-2026-66077', 'CVE-2026-66079', 'CVE-2026-67231', 'CVE-2026-67232', 'CVE-2026-67235', 'CVE-2026-67236']},
    {'osver': '22.04', 'pkgname': 'rabbitmq-server', 'pkgver': '3.9.27-0ubuntu0.6', 'cves': ['CVE-2026-66070', 'CVE-2026-66077', 'CVE-2026-66079', 'CVE-2026-67231', 'CVE-2026-67232', 'CVE-2026-67235', 'CVE-2026-67236', 'CVE-2026-67238', 'CVE-2026-67239', 'CVE-2026-67409']},
    {'osver': '24.04', 'pkgname': 'rabbitmq-server', 'pkgver': '3.12.1-1ubuntu1.7', 'cves': ['CVE-2026-66070', 'CVE-2026-66077', 'CVE-2026-66079', 'CVE-2026-67231', 'CVE-2026-67232', 'CVE-2026-67235', 'CVE-2026-67236', 'CVE-2026-67237', 'CVE-2026-67238', 'CVE-2026-67239', 'CVE-2026-67409']},
    {'osver': '26.04', 'pkgname': 'rabbitmq-server', 'pkgver': '4.0.5-10ubuntu5.2', 'cves': ['CVE-2026-66070', 'CVE-2026-66077', 'CVE-2026-66079', 'CVE-2026-67231', 'CVE-2026-67232', 'CVE-2026-67235', 'CVE-2026-67236', 'CVE-2026-67237', 'CVE-2026-67238', 'CVE-2026-67239', 'CVE-2026-67404', 'CVE-2026-67409']}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'rabbitmq-server');
}