Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : Netatalk vulnerabilities (USN-8395-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8395-1. 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(320405);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/11");

  script_cve_id(
    "CVE-2026-44047",
    "CVE-2026-44048",
    "CVE-2026-44049",
    "CVE-2026-44050",
    "CVE-2026-44051",
    "CVE-2026-44052",
    "CVE-2026-44055",
    "CVE-2026-44060",
    "CVE-2026-44062",
    "CVE-2026-44064"
  );
  script_xref(name:"USN", value:"8395-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : Netatalk vulnerabilities (USN-8395-1)");

  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 / 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages
installed that are affected by multiple vulnerabilities as referenced in the USN-8395-1 advisory.

    Arjun Basnet discovered that Netatalk incorrectly sanitized user input in its MySQL CNID backend. A remote
    authenticated attacker could possibly use this issue to conduct SQL injection attacks. (CVE-2026-44047)

    Arjun Basnet discovered that Netatalk incorrectly handled UCS-2 character set conversion. A remote
    authenticated attacker could possibly use this issue to cause a denial of service or execute arbitrary
    code. (CVE-2026-44048)

    Arjun Basnet discovered that Netatalk improperly handled null termination during character set conversion.
    A remote authenticated attacker could possibly use this issue to cause a denial of service or execute
    arbitrary code. (CVE-2026-44049)

    Arjun Basnet discovered that the Netatalk CNID daemon improperly handled request-supplied name lengths. A
    local attacker could possibly use this issue to cause a denial of service or execute arbitrary code with
    escalated privileges. (CVE-2026-44050)

    Arjun Basnet discovered that Netatalk improperly resolved symbolic links. A remote authenticated attacker
    could possibly use this issue to read or overwrite arbitrary files on the system. (CVE-2026-44051)

    Arjun Basnet discovered that Netatalk incorrectly handled logging when performing LDAP simple-bind
    operations. A local attacker could possibly use this issue to obtain sensitive information.
    (CVE-2026-44052)

    Arjun Basnet discovered that Netatalk contained an operator precedence logic error when processing input.
    A remote authenticated attacker could possibly use this issue to cause a denial of service or execute
    arbitrary code. (CVE-2026-44055)

    Arjun Basnet discovered that Netatalk incorrectly handled DSI write requests. A remote unauthenticated
    attacker could possibly use this issue to cause a denial of service. (CVE-2026-44060)

    Arjun Basnet discovered that Netatalk incorrectly validated output lengths when converting character sets.
    A remote authenticated attacker could possibly use this issue to cause a denial of service or execute
    arbitrary code. (CVE-2026-44062)

    Arjun Basnet discovered that Netatalk incorrectly handled length validation when parsing certain session
    identifiers. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-44064)

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-8395-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  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:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-44050");

  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:"2026/05/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/11");

  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:"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:a2boot");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:atalkd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libatalk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libatalk-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:macipgw");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:netatalk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:netatalk-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:netatalk-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:papd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:timelord");
  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", "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 || '22.04' >< os_release || '24.04' >< os_release || '26.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 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 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': 'netatalk', 'pkgver': '2.2.2-1ubuntu2.2+esm3', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'netatalk', 'pkgver': '2.2.5-1ubuntu0.2+esm3', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'netatalk', 'pkgver': '2.2.6-1ubuntu0.18.04.2+esm3', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'netatalk', 'pkgver': '3.1.12~ds-4ubuntu0.20.04.4+esm1', 'ubuntu_pro': TRUE},
    {'osver': '22.04', 'pkgname': 'netatalk', 'pkgver': '3.1.12~ds-9ubuntu0.22.04.4+esm1', 'ubuntu_pro': TRUE},
    {'osver': '24.04', 'pkgname': 'netatalk', 'pkgver': '3.1.18~ds-1ubuntu0.1~esm2', 'ubuntu_pro': TRUE},
    {'osver': '26.04', 'pkgname': 'a2boot', 'pkgver': '4.2.3~ds-2.1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '26.04', 'pkgname': 'atalkd', 'pkgver': '4.2.3~ds-2.1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '26.04', 'pkgname': 'libatalk', 'pkgver': '4.2.3~ds-2.1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '26.04', 'pkgname': 'libatalk-dev', 'pkgver': '4.2.3~ds-2.1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '26.04', 'pkgname': 'macipgw', 'pkgver': '4.2.3~ds-2.1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '26.04', 'pkgname': 'netatalk', 'pkgver': '4.2.3~ds-2.1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '26.04', 'pkgname': 'netatalk-tests', 'pkgver': '4.2.3~ds-2.1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '26.04', 'pkgname': 'netatalk-tools', 'pkgver': '4.2.3~ds-2.1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '26.04', 'pkgname': 'papd', 'pkgver': '4.2.3~ds-2.1ubuntu0.1', 'ubuntu_pro': FALSE},
    {'osver': '26.04', 'pkgname': 'timelord', 'pkgver': '4.2.3~ds-2.1ubuntu0.1', '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'];
  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, 'a2boot / atalkd / libatalk / libatalk-dev / macipgw / netatalk / etc');
}