Ubuntu 14.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : libsndfile vulnerabilities (USN-7273-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-7273-1. 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(216423);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/02/18");

  script_cve_id("CVE-2021-4156", "CVE-2024-50612");
  script_xref(name:"USN", value:"7273-1");

  script_name(english:"Ubuntu 14.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : libsndfile vulnerabilities (USN-7273-1)");

  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 / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by
multiple vulnerabilities as referenced in the USN-7273-1 advisory.

    It was discovered that libsndfile incorrectly handled memory when executing its FLAC codec. If a user or
    automated system were tricked into processing a specially crafted sound file, an attacker could possibly
    use this issue to cause a denial of service or obtain sensitive information. (CVE-2021-4156)

    It was discovered that libsndfile incorrectly handled certain malformed OggVorbis files. An attacker could
    possibly use this issue to cause libsndfile to crash, resulting in a denial of service. (CVE-2024-50612)

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-7273-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected libsndfile1, libsndfile1-dev and / or sndfile-programs packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P");
  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:N/UI:R/S:U/C:L/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-4156");

  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:"2022/03/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/02/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/02/18");

  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: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:"p-cpe:/a:canonical:ubuntu_linux:libsndfile1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsndfile1-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:sndfile-programs");
  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) 2025 Canonical, Inc. / NASL script (C) 2025 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 || '18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 18.04 / 20.04 / 22.04', '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': 'libsndfile1', 'pkgver': '1.0.25-7ubuntu2.2+esm4', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'libsndfile1-dev', 'pkgver': '1.0.25-7ubuntu2.2+esm4', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'sndfile-programs', 'pkgver': '1.0.25-7ubuntu2.2+esm4', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libsndfile1', 'pkgver': '1.0.28-4ubuntu0.18.04.2+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libsndfile1-dev', 'pkgver': '1.0.28-4ubuntu0.18.04.2+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'sndfile-programs', 'pkgver': '1.0.28-4ubuntu0.18.04.2+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libsndfile1', 'pkgver': '1.0.28-7ubuntu0.3', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'libsndfile1-dev', 'pkgver': '1.0.28-7ubuntu0.3', 'ubuntu_pro': FALSE},
    {'osver': '20.04', 'pkgname': 'sndfile-programs', 'pkgver': '1.0.28-7ubuntu0.3', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'libsndfile1', 'pkgver': '1.0.31-2ubuntu0.2', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'libsndfile1-dev', 'pkgver': '1.0.31-2ubuntu0.2', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'sndfile-programs', 'pkgver': '1.0.31-2ubuntu0.2', 'ubuntu_pro': FALSE}
];

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'];
  var pro_required = NULL;
  if (!empty_or_null(package_array['ubuntu_pro'])) pro_required = package_array['ubuntu_pro'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) {
        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_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, 'libsndfile1 / libsndfile1-dev / sndfile-programs');
}