NewStart CGSL MAIN 7.02 : bind Multiple Vulnerabilities (NS-SA-2026-0110)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2026-0110. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(343570);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/10");

  script_cve_id(
    "CVE-2025-8677",
    "CVE-2025-40778",
    "CVE-2025-40780",
    "CVE-2026-3039",
    "CVE-2026-3592",
    "CVE-2026-5946",
    "CVE-2026-5950"
  );
  script_xref(name:"IAVA", value:"2025-A-0800-S");
  script_xref(name:"IAVA", value:"2026-A-0498-S");

  script_name(english:"NewStart CGSL MAIN 7.02 : bind Multiple Vulnerabilities (NS-SA-2026-0110)");

  script_set_attribute(attribute:"synopsis", value:
"The remote NewStart CGSL host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version MAIN 7.02, has bind packages installed that are affected by multiple
vulnerabilities:

  - Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead
    to CPU exhaustion. This issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13,
    9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1. (CVE-2025-8677)

  - In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it
    is possible for an attacker to predict the source port and query ID that BIND will use. This issue affects
    BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through
    9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
    (CVE-2025-40780)

  - Under certain circumstances, BIND is too lenient when accepting records from answers, allowing an attacker
    to inject forged data into the cache. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0
    through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1
    through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1. (CVE-2025-40778)

  - BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to
    excessive memory consumption when receiving and processing maliciously-constructed packets. Typically
    these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS
    environments. This issue affects BIND 9 versions 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0
    through 9.20.22, 9.21.0 through 9.21.21, 9.9.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and
    9.20.9-S1 through 9.20.22-S1. (CVE-2026-3039)

  - BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver
    makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This
    issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22,
    9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through
    9.20.22-S1. (CVE-2026-3592)

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://security.gd-linux.com/notice/NS-SA-2026-0110");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2025-40778");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2025-40780");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2025-8677");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-3039");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-3592");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-5946");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-5950");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL bind packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-40780");

  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:"2025/10/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:bind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:bind-chroot");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:bind-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:bind-dnssec-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:bind-dnssec-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:bind-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:bind-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:bind-license");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:bind-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:zte:cgsl_main:7");
  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:"NewStart CGSL 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/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");

  exit(0);
}

include('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var os_release = get_kb_item('Host/ZTE-CGSL/release');
if (isnull(os_release) || os_release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, 'NewStart Carrier Grade Server Linux');

if (os_release !~ "CGSL\sMAIN\s7\.02")
  audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 7.02');

if (!get_kb_item('Host/ZTE-CGSL/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'NewStart Carrier Grade Server Linux', cpu);

var flag = 0;

var pkgs = {
  'CGSL MAIN 7.02': [
    'bind-9.18.49-1.zncgsl7',
    'bind-chroot-9.18.49-1.zncgsl7',
    'bind-devel-9.18.49-1.zncgsl7',
    'bind-dnssec-doc-9.18.49-1.zncgsl7',
    'bind-dnssec-utils-9.18.49-1.zncgsl7',
    'bind-doc-9.18.49-1.zncgsl7',
    'bind-libs-9.18.49-1.zncgsl7',
    'bind-license-9.18.49-1.zncgsl7',
    'bind-utils-9.18.49-1.zncgsl7'
  ]
};
var pkg_list = pkgs[os_release];
var pkg;
foreach (pkg in pkg_list)
  if (rpm_check(reference:pkg, release:'ZTE ' + os_release, rpm_spec_vers_cmp:TRUE)) 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');
}