openSUSE 16 Security Update : python-zeroconf (openSUSE-SU-2026:21175-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# openSUSE Security Update openSUSE-SU-2026:21175-1. The text itself
# is copyright (C) SUSE.
##

include('compat.inc');

if (description)
{
  script_id(324891);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/20");

  script_cve_id(
    "CVE-2026-47180",
    "CVE-2026-47183",
    "CVE-2026-47184",
    "CVE-2026-48045",
    "CVE-2026-48487"
  );

  script_name(english:"openSUSE 16 Security Update : python-zeroconf (openSUSE-SU-2026:21175-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote openSUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the
openSUSE-SU-2026:21175-1 advisory.

    Changes in python-zeroconf:

    - CVE-2026-47180: zeroconf has unbounded recursion in DNS
      compression-pointer decoder that allows LAN-local denial of service
      (bsc#1268341)
    - CVE-2026-47183: zeroconf: Unbounded exception-dedup state retains
      packet buffers via traceback frame locals, enabling LAN-local memory
      exhaustion (bsc#1268342)
    - CVE-2026-47184: zeroconf has unbounded DNS record cache that allows
      LAN-local memory exhaustion via multicast flood (bsc#1268343)
    - CVE-2026-48045: python-zeroconf: Unbounded TC-deferred queue allows
      LAN-local memory exhaustion via spoofed-source flood (bsc#1268388)
    - CVE-2026-48487: python-zeroconf: Unvalidated rdlength in record
      payload readers allows LAN-local cache corruption via crafted mDNS
      packet (bsc#1268235)

Tenable has extracted the preceding description block directly from the SUSE 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://bugzilla.suse.com/1268235");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1268341");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1268342");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1268343");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1268388");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-47180");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-47183");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-47184");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-48045");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-48487");
  script_set_attribute(attribute:"solution", value:
"Update the affected python313-zeroconf package.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:N/I:C/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/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-2026-48487");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-48045");

  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:"2026/05/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python313-zeroconf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:16.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/SuSE/release');
if (isnull(os_release) || os_release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, 'openSUSE');
var _os_ver = pregmatch(pattern: "^SUSE([\d.]+)", string:os_release);
if (isnull(_os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'openSUSE');
_os_ver = _os_ver[1];
if (os_release !~ "^(SUSE16\.0)$") audit(AUDIT_OS_RELEASE_NOT, 'openSUSE', '16.0', os_release);
if (!get_kb_item("Host/SuSE/rpm-list")) 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, 'openSUSE ' + _os_ver, cpu);

var pkgs = [
    {'reference':'python313-zeroconf-0.136.0-bp160.2.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var _cpu = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (rpm_check(release:_release, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'python313-zeroconf');
}