Fedora 46 : bind / bind-dyndb-ldap (2026-56974571ee)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory FEDORA-2026-56974571ee
#

include('compat.inc');

if (description)
{
  script_id(367324);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/19");

  script_cve_id(
    "CVE-2026-10822",
    "CVE-2026-11331",
    "CVE-2026-13321",
    "CVE-2026-19033",
    "CVE-2026-19662",
    "CVE-2026-19666",
    "CVE-2026-19667",
    "CVE-2026-19668",
    "CVE-2026-19941",
    "CVE-2026-75029",
    "CVE-2026-77119",
    "CVE-2026-78301",
    "CVE-2026-80274",
    "CVE-2026-81563",
    "CVE-2026-81736"
  );
  script_xref(name:"IAVA", value:"2026-A-0764-S");
  script_xref(name:"IAVA", value:"2026-A-1029");
  script_xref(name:"FEDORA", value:"2026-56974571ee");

  script_name(english:"Fedora 46 : bind / bind-dyndb-ldap (2026-56974571ee)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Fedora 46 host has packages installed that are affected by multiple vulnerabilities as referenced in the
FEDORA-2026-56974571ee advisory.

    # Security updates using git snapshot

    Release 9.18 is end-of-life upstream. Apply security fixes including medium CVEs from somehow maintained
    git branch bind-9.18.

    - [CVE-2026-75029](https://kb.isc.org/docs/CVE-2026-75029) Discard repeated SOA, CNAME, and DNAME records
    when parsing DNS messages
    - [CVE-2026-19666](https://kb.isc.org/docs/CVE-2026-19666) DNS64 with break-dnssec could cause an
    assertion failure
    - [CVE-2026-19662](https://kb.isc.org/docs/CVE-2026-19662) Prevent resolver crash with cached DNSSEC
    proofs
    - [CVE-2026-19941](https://kb.isc.org/docs/CVE-2026-19941) Prevent forged DNSSEC-validated NXDOMAIN
    responses
    - [CVE-2026-78301](https://kb.isc.org/docs/CVE-2026-78301) Out-of-zone records in a zone database could be
    served as authoritative
    - [CVE-2026-81563](https://kb.isc.org/docs/CVE-2026-81563) Following HTTPS/SVCB aliases could leak
    resolver cache memory
    - [CVE-2026-80274](https://kb.isc.org/docs/CVE-2026-80274) Crash on wildcard answers carrying both NSEC
    and NSEC3 proofs
    - [CVE-2026-19033](https://kb.isc.org/docs/CVE-2026-19033) Require a TSIG on every message of incoming
    zone transfers
    - [CVE-2026-81736](https://kb.isc.org/docs/CVE-2026-81736) Cached HTTPS/SVCB aliases could exhaust
    resolver CPU
    - [CVE-2026-19667](https://kb.isc.org/docs/CVE-2026-19667) Reject negative cache records that do not fit
    in a dns_rdata_t



Tenable has extracted the preceding description block directly from the Fedora 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://bodhi.fedoraproject.org/updates/FEDORA-2026-56974571ee");
  script_set_attribute(attribute:"solution", value:
"Update the affected 32:bind and / or bind-dyndb-ldap packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/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:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-13321");

  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:"2026/07/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:46");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:bind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:bind-dyndb-ldap");
  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:"Fedora 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_info2.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'Fedora' >!< os_product) audit(AUDIT_OS_NOT, 'Fedora');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Fedora');
if (! preg(pattern:"^46([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Fedora 46', 'Fedora ' + os_version);

if (!get_kb_item('Host/RedHat/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, 'Fedora', cpu);

var constraints = [
  {
    'release': '46',
    'pkgs': [
      {'reference':'bind-9.18.51^git20261003.d0a87358-12.fc46', 'rpm_spec_vers_cmp':TRUE, 'epoch':'32'},
      {'reference':'bind-dyndb-ldap-11.11-18.fc46', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      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, 'bind / bind-dyndb-ldap');
}