Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / Pro Realtime 24.04 LTS : SimpleSAMLphp vulnerabilities (USN-8770-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8770-1. 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(346237);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/16");

  script_cve_id("CVE-2019-3465", "CVE-2024-52596", "CVE-2025-27773");
  script_xref(name:"USN", value:"8770-1");

  script_name(english:"Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / Pro Realtime 24.04 LTS : SimpleSAMLphp vulnerabilities (USN-8770-1)");

  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 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / Pro Realtime 24.04 LTS host has a package installed
that is affected by multiple vulnerabilities as referenced in the USN-8770-1 advisory.

    It was discovered that SimpleSAMLphp incorrectly validated cryptographic signatures in XML messages. An
    authenticated attacker could possibly use this issue to impersonate users or gain elevated privileges.
    This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-3465)

    It was discovered that SimpleSAMLphp incorrectly handled external entities when parsing untrusted XML
    documents. A remote attacker could possibly use this issue to obtain sensitive information. This issue did
    not affect Ubuntu 24.04 LTS. (CVE-2024-52596)

    It was discovered that SimpleSAMLphp incorrectly verified signatures in SAML messages using the HTTP-
    Redirect binding. A remote attacker could possibly use this issue to bypass authentication and impersonate
    users. (CVE-2025-27773)

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-8770-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected simplesamlphp package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  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:L/UI:N/S:U/C:H/I:H/A:H");
  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:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:L/SI:L/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-3465");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2024-52596");

  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:"2019/11/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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:Pro:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:simplesamlphp");
  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 (! ('18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release || '24.04' >< os_release || 'Pro' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04 / 20.04 / 22.04 / 24.04 / Pro', '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': '18.04', 'pkgname': 'simplesamlphp', 'pkgver': '1.15.3-1ubuntu0.1~esm1', 'cves': ['CVE-2019-3465', 'CVE-2024-52596', 'CVE-2025-27773']},
    {'osver': '20.04', 'pkgname': 'simplesamlphp', 'pkgver': '1.18.4-1ubuntu0.1~esm1', 'cves': ['CVE-2024-52596', 'CVE-2025-27773']},
    {'osver': '22.04', 'pkgname': 'simplesamlphp', 'pkgver': '1.19.1-1.1ubuntu0.1~esm1', 'cves': ['CVE-2024-52596', 'CVE-2025-27773']},
    {'osver': '24.04', 'pkgname': 'simplesamlphp', 'pkgver': '1.19.7-1+deb12u1ubuntu0.1', 'cves': ['CVE-2024-52596', 'CVE-2025-27773']},
    {'osver': 'Pro', 'pkgname': 'simplesamlphp', 'pkgver': '1.19.7-1+deb12u1ubuntu0.1', 'cves': ['CVE-2024-52596', 'CVE-2025-27773']}
];

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, 'simplesamlphp');
}