MiracleLinux 9 : brotli-1.0.9-10.el9_8 (AXBA:2026-2004:03)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# Miracle Linux Security Advisory AXBA:2026-2004:03.
##

include('compat.inc');

if (description)
{
  script_id(364358);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/09");

  script_cve_id("CVE-2025-66471");

  script_name(english:"MiracleLinux 9 : brotli-1.0.9-10.el9_8 (AXBA:2026-2004:03)");

  script_set_attribute(attribute:"synopsis", value:
"The remote MiracleLinux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the
AXBA:2026-2004:03 advisory.

  - urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the
    Streaming API improperly handles highly compressed data. urllib3's streaming API is designed for the
    efficient handling of large HTTP responses by reading the content in chunks, rather than loading the
    entire response body into memory at once. When streaming a compressed response, urllib3 can perform
    decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd).
    The library must read compressed data from the network and decompress it until the requested chunk size is
    met. Any resulting decompressed data that exceeds the requested amount is held in an internal buffer for
    the next read operation. The decompression logic could cause urllib3 to fully decode a small amount of
    highly compressed data in a single operation. This can result in excessive resource consumption (high CPU
    usage and massive memory allocation for the decompressed data. (CVE-2025-66471)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://tsn.miraclelinux.com/en/node/24829");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-66471");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_severity", value:"N/a");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/12/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:brotli");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:brotli-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:libbrotli");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:python3-brotli");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:miracle:linux:9");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Miracle Linux 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/MiracleLinux/release", "Host/MiracleLinux/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_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'MIRACLE LINUX' >!< os_product) audit(AUDIT_OS_NOT, 'MIRACLE LINUX');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'MIRACLE LINUX');
if (! preg(pattern:"^9([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'MiracleLinux 9.x', 'MIRACLE LINUX ' + os_version);

if (!get_kb_item('Host/MiracleLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('aarch64' >!< cpu && 'ppc' >!< cpu && 's390' >!< cpu && 'x86_64' >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'MIRACLE LINUX', cpu);

var constraints = [
  {
    'release': '9',
    'pkgs': [
      {'reference':'brotli-1.0.9-10.el9_8', 'cpu':'i686', 'el_string':'el9_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'brotli-1.0.9-10.el9_8', 'cpu':'x86_64', 'el_string':'el9_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'brotli-devel-1.0.9-10.el9_8', 'cpu':'i686', 'el_string':'el9_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'brotli-devel-1.0.9-10.el9_8', 'cpu':'x86_64', 'el_string':'el9_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libbrotli-1.0.9-10.el9_8', 'cpu':'i686', 'el_string':'el9_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libbrotli-1.0.9-10.el9_8', 'cpu':'x86_64', 'el_string':'el9_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'python3-brotli-1.0.9-10.el9_8', 'cpu':'x86_64', 'el_string':'el9_8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'}
    ]
  }
];

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, 'brotli / brotli-devel / libbrotli / python3-brotli');
}