Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-11.0.1.6)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(335150);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/13");

  script_cve_id("CVE-2026-1519", "CVE-2026-37555", "CVE-2026-40356");

  script_name(english:"Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-11.0.1.6)");

  script_set_attribute(attribute:"synopsis", value:
"The Nutanix AHV host is affected by multiple vulnerabilities .");
  script_set_attribute(attribute:"description", value:
"The version of AHV installed on the remote host is prior to 11.0.1.6. It is, therefore, affected by multiple
vulnerabilities as referenced in the NXSA-AHV-11.0.1.6 advisory.

  - In MIT Kerberos 5 (aka krb5) before 1.22.3, there is an integer underflow and resultant out-of-bounds read
    if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in
    /etc/gss/mech. An unauthenticated remote attacker can trigger this, possibly causing the process to
    terminate in parse_message. (CVE-2026-40356)

  - If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver
    may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are
    circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-
    does-my-authoritative-server-make-recursive-queries). This issue affects BIND 9 versions 9.11.0 through
    9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through
    9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1. (CVE-2026-1519)

  - An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec. The AIFF code path (line 241) was fixed with
    (sf_count_t) cast, but the WAV code path (line 235) and close path (line 167) were not. When
    samplesperblock (int) * blocks (int) exceeds INT_MAX, the 32-bit multiplication overflows before being
    assigned to sf.frames (sf_count_t/int64). With samplesperblock=50000 and blocks=50000, the product
    2500000000 overflows to -1794967296. This causes incorrect frame count leading to heap buffer overflow or
    denial of service. Both values come from the WAV file header and are attacker-controlled. This issue was
    discovered after an incomplete fix for CVE-2022-33065. (CVE-2026-37555)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://portal.nutanix.com/page/documents/security-advisories/release-advisories/details?id=NXSA-AHV-11.0.1.6
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?82ba74bd");
  script_set_attribute(attribute:"solution", value:
"Update the Nutanix AHV software to the recommended version. Before upgrading: if this cluster is registered with Prism
Central, ensure that Prism Central has been upgraded first to a compatible version. Refer to the Software Product
Interoperability page on the Nutanix portal.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:U/C:N/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-2026-40356");

  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:"2026/03/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:nutanix:ahv");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("nutanix_collect.nasl");
  script_require_keys("Host/Nutanix/Data/Node/Version", "Host/Nutanix/Data/Node/Type");

  exit(0);
}

include('vcf.inc');
include('vcf_extras.inc');

var app_info = vcf::nutanix::get_app_info(node:TRUE);

var constraints = [
  { 'min_version' : '11.0', 'fixed_version' : '11.0.1.6', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.102001', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.102005', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.103003', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.103014', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.103032', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.103053', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.103068', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.103072', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.103084', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.103087', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' },
  { 'fixed_version' : '11.0.1.6', 'equal' : '20230302.103100', 'product' : 'AHV', 'fixed_display' : 'Upgrade the AHV install to 11.0.1.6 or higher.' }
];

vcf::nutanix::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_HOLE
);