Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS : nginx vulnerabilities (USN-8375-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8375-1. 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(318631);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/17");

  script_cve_id(
    "CVE-2025-53859",
    "CVE-2026-1642",
    "CVE-2026-9256",
    "CVE-2026-27651",
    "CVE-2026-27654",
    "CVE-2026-27784",
    "CVE-2026-28753",
    "CVE-2026-32647",
    "CVE-2026-40701",
    "CVE-2026-42934",
    "CVE-2026-42945",
    "CVE-2026-42946"
  );
  script_xref(name:"IAVA", value:"2025-A-0615");
  script_xref(name:"IAVA", value:"2026-A-0140");
  script_xref(name:"IAVA", value:"2026-A-0280-S");
  script_xref(name:"IAVA", value:"2026-A-0515");
  script_xref(name:"USN", value:"8375-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS : nginx vulnerabilities (USN-8375-1)");

  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 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by
multiple vulnerabilities as referenced in the USN-8375-1 advisory.

    It was discovered that the nginx ngx_mail_smtp_module module incorrectly handled certain memory operations
    when doing SMTP authentication. This could possibly result in sensitive information being sent to the
    authentication server. (CVE-2025-53859)

    It was discovered that nginx incorrectly handled proxying to upstream TLS servers. An attacker could
    possibly use this issue to insert plain text data into the response from an upstream proxied server.
    (CVE-2026-1642)

    It was discovered that the nginx ngx_mail_auth_http_module module incorrectly handled certain requests. An
    attacker could possibly use this issue to cause nginx to crash, resulting in a denial of service.
    (CVE-2026-27651)

    It was discovered that the nginx ngx_http_dav_module module incorrectly handled certain destination URIs.
    An attacker could use this issue to cause nginx to crash, resulting in a denial of service, or possibly
    modify source or destination names outside of the document root. (CVE-2026-27654)

    It was discovered that the nginx ngx_http_mp4_module module incorrectly handled certain MP4 files. An
    attacker could use this issue to cause nginx to crash, resulting in a denial of service, or possibly
    execute arbitrary code. (CVE-2026-27784, CVE-2026-32647)

    It was discovered that the nginx ngx_mail_smtp_module module incorrectly handled certain CRLF sequences.
    An attacker could possibly use this issue to inject arbitrary SMTP headers. (CVE-2026-28753)

    It was discovered that nginx contained a use-after-free vulnerability in the ngx_http_ssl_module module
    when client certificate verification and OCSP validation were enabled. A remote attacker could use this
    issue to cause nginx to crash, resulting in a denial of service, or possibly modify data in memory.
    (CVE-2026-40701)

    It was discovered that nginx did not properly handle certain proxied responses in the
    ngx_http_charset_module module. A remote attacker could possibly use this issue to obtain sensitive
    information or cause nginx to crash, resulting in a denial of service. (CVE-2026-42934)

    It was discovered that the nginx ngx_http_rewrite_module component incorrectly handled certain rewrite
    directives. A remote attacker could use this issue to cause nginx to crash, resulting in a denial of
    service, or possibly execute arbitrary code. (CVE-2026-42945)

    It was discovered that nginx did not properly process certain SCGI and uWSGI responses. An attacker able
    to perform a machine-in-the-middle attack could possibly use this issue to obtain sensitive information or
    cause nginx to crash, resulting in a denial of service. (CVE-2026-42946)

    It was discovered that nginx incorrectly handled certain rewrite rules in the ngx_http_rewrite_module
    module. A remote attacker could use this issue to cause nginx to crash, resulting in a denial of service,
    or possibly execute arbitrary code. (CVE-2026-9256)

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-8375-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:H/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-2026-27654");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-42946");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-9256");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/08/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  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:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-auth-pam");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-cache-purge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-dav-ext");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-echo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-fancyindex");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-geoip");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-geoip2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-headers-more-filter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-image-filter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-lua");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-ndk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-subs-filter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-uploadprogress");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-upstream-fair");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-http-xslt-filter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-mail");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-nchan");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-rtmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnginx-mod-stream");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nginx");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nginx-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nginx-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nginx-extras");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nginx-full");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nginx-light");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nginx-naxsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nginx-naxsi-ui");
  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:"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", "ubuntu_pro_sub_detect.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 (! ('14.04' >< os_release || '16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04 / 18.04 / 20.04', '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 ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);

var pro_caveat_needed = FALSE;

var pkgs = [
    {'osver': '14.04', 'pkgname': 'nginx', 'pkgver': '1.4.6-1ubuntu3.9+esm6', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'nginx-common', 'pkgver': '1.4.6-1ubuntu3.9+esm6', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'nginx-core', 'pkgver': '1.4.6-1ubuntu3.9+esm6', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'nginx-extras', 'pkgver': '1.4.6-1ubuntu3.9+esm6', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'nginx-full', 'pkgver': '1.4.6-1ubuntu3.9+esm6', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'nginx-light', 'pkgver': '1.4.6-1ubuntu3.9+esm6', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'nginx-naxsi', 'pkgver': '1.4.6-1ubuntu3.9+esm6', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'nginx-naxsi-ui', 'pkgver': '1.4.6-1ubuntu3.9+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'nginx', 'pkgver': '1.10.3-0ubuntu0.16.04.5+esm7', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'nginx-common', 'pkgver': '1.10.3-0ubuntu0.16.04.5+esm7', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'nginx-core', 'pkgver': '1.10.3-0ubuntu0.16.04.5+esm7', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'nginx-extras', 'pkgver': '1.10.3-0ubuntu0.16.04.5+esm7', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'nginx-full', 'pkgver': '1.10.3-0ubuntu0.16.04.5+esm7', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'nginx-light', 'pkgver': '1.10.3-0ubuntu0.16.04.5+esm7', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-auth-pam', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-cache-purge', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-dav-ext', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-echo', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-fancyindex', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-geoip', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-headers-more-filter', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-image-filter', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-lua', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-ndk', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-perl', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-subs-filter', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-uploadprogress', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-upstream-fair', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-http-xslt-filter', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-mail', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-nchan', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-rtmp', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libnginx-mod-stream', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'nginx', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'nginx-common', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'nginx-core', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'nginx-extras', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'nginx-full', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'nginx-light', 'pkgver': '1.14.0-0ubuntu1.11+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-auth-pam', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-cache-purge', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-dav-ext', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-echo', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-fancyindex', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-geoip', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-geoip2', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-headers-more-filter', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-image-filter', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-lua', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-ndk', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-perl', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-subs-filter', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-uploadprogress', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-upstream-fair', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-http-xslt-filter', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-mail', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-nchan', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-rtmp', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libnginx-mod-stream', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'nginx', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'nginx-common', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'nginx-core', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'nginx-extras', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'nginx-full', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'nginx-light', 'pkgver': '1.18.0-0ubuntu1.7+esm1', 'ubuntu_pro': TRUE}
];

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

if (flag)
{
  var extra = '';
  if (pro_caveat_needed) {
    extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
    extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
    extra += 'require an Ubuntu Pro subscription.\n\n';
  }
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, 'libnginx-mod-http-auth-pam / libnginx-mod-http-cache-purge / etc');
}