Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : OpenStack Keystone vulnerabilities (USN-8854-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8854-1. 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(358413);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/02");

  script_cve_id("CVE-2026-80182", "CVE-2026-80183", "CVE-2026-80184");
  script_xref(name:"USN", value:"8854-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : OpenStack Keystone vulnerabilities (USN-8854-1)");

  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 packages installed that
are affected by multiple vulnerabilities as referenced in the USN-8854-1 advisory.

    Grzegorz Grasza discovered that OpenStack Keystone did not consistently enforce restrictions for delegated
    authentication tokens. An authenticated attacker could possibly use this issue to create credentials or
    delegations

    that outlasted the delegated token. (CVE-2026-80182)

    It was discovered that OpenStack Keystone incorrectly handled role assignment queries under certain
    circumstances. An authenticated attacker could possibly use this issue to obtain sensitive information.
    This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.
    (CVE-2026-80183)

    Tim Shephard discovered that OpenStack Keystone did not properly restrict reauthentication using delegated
    tokens. An authenticated attacker could possibly use this issue to escape their intended project scope and
    obtain unauthorized access. (CVE-2026-80184)

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-8854-1");
  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:N/A:N");
  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:N");
  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:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-80184");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-80182");

  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:"2026/08/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/01");

  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:keystone");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:keystone-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-keystone");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3-keystone");
  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_info.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': 'keystone', 'pkgver': '2:9.3.0-0ubuntu3.2+esm2', 'cves': ['CVE-2026-80182', 'CVE-2026-80184']},
    {'osver': '16.04', 'pkgname': 'python-keystone', 'pkgver': '2:9.3.0-0ubuntu3.2+esm2', 'cves': ['CVE-2026-80182', 'CVE-2026-80184']},
    {'osver': '18.04', 'pkgname': 'keystone', 'pkgver': '2:13.0.4-0ubuntu1+esm1', 'cves': ['CVE-2026-80182', 'CVE-2026-80184']},
    {'osver': '18.04', 'pkgname': 'python-keystone', 'pkgver': '2:13.0.4-0ubuntu1+esm1', 'cves': ['CVE-2026-80182', 'CVE-2026-80184']},
    {'osver': '20.04', 'pkgname': 'keystone', 'pkgver': '2:17.0.1-0ubuntu2+esm2', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '20.04', 'pkgname': 'keystone-common', 'pkgver': '2:17.0.1-0ubuntu2+esm2', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '20.04', 'pkgname': 'python3-keystone', 'pkgver': '2:17.0.1-0ubuntu2+esm2', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '22.04', 'pkgname': 'keystone', 'pkgver': '2:21.0.1-0ubuntu2.6', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '22.04', 'pkgname': 'keystone-common', 'pkgver': '2:21.0.1-0ubuntu2.6', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '22.04', 'pkgname': 'python3-keystone', 'pkgver': '2:21.0.1-0ubuntu2.6', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '24.04', 'pkgname': 'keystone', 'pkgver': '2:25.0.0-0ubuntu1.6', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '24.04', 'pkgname': 'keystone-common', 'pkgver': '2:25.0.0-0ubuntu1.6', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '24.04', 'pkgname': 'python3-keystone', 'pkgver': '2:25.0.0-0ubuntu1.6', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '26.04', 'pkgname': 'keystone', 'pkgver': '2:29.0.0-0ubuntu1.4', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '26.04', 'pkgname': 'keystone-common', 'pkgver': '2:29.0.0-0ubuntu1.4', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']},
    {'osver': '26.04', 'pkgname': 'python3-keystone', 'pkgver': '2:29.0.0-0ubuntu1.4', 'cves': ['CVE-2026-80182', 'CVE-2026-80183', 'CVE-2026-80184']}
];

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, 'keystone / keystone-common / python-keystone / python3-keystone');
}