NewStart CGSL MAIN 7.02 : libxml2 Multiple Vulnerabilities (NS-SA-2025-0106)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2025-0106. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(242784);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/07/25");

  script_cve_id(
    "CVE-2023-45322",
    "CVE-2024-25062",
    "CVE-2024-40896",
    "CVE-2024-56171",
    "CVE-2025-24928",
    "CVE-2025-27113",
    "CVE-2025-32414"
  );
  script_xref(name:"IAVA", value:"2024-A-0067-S");
  script_xref(name:"IAVA", value:"2025-A-0123-S");
  script_xref(name:"IAVA", value:"2025-A-0229-S");

  script_name(english:"NewStart CGSL MAIN 7.02 : libxml2 Multiple Vulnerabilities (NS-SA-2025-0106)");

  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 libxml2 packages installed that are affected by multiple
vulnerabilities:

  - In libxml2 before 2.13.8 and 2.14.x before 2.14.2, out-of-bounds memory access can occur in the Python API
    (Python bindings) because of an incorrect return value. This occurs in xmlPythonFileRead and
    xmlPythonFileReadRaw because of a difference between bytes and characters. (CVE-2025-32414)

  - libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails.
    This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor's position is I don't think these issues are
    critical enough to warrant a CVE ID ... because an attacker typically can't control when memory
    allocations fail. (CVE-2023-45322)

  - An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5. When using the XML Reader
    interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to
    an xmlValidatePopElement use-after-free. (CVE-2024-25062)

  - In libxml2 2.11 before 2.11.9, 2.12 before 2.12.9, and 2.13 before 2.13.3, the SAX parser can produce
    events for external entities even if custom SAX handlers try to override entity content (by setting
    checked). This makes classic XXE attacks possible. (CVE-2024-40896)

  - libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables and
    xmlSchemaBubbleIDCNodeTables in xmlschemas.c. To exploit this, a crafted XML document must be validated
    against an XML schema with certain identity constraints, or a crafted XML schema must be used.
    (CVE-2024-56171)

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-2025-0106");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-45322");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2024-25062");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2024-40896");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2024-56171");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2025-24928");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2025-27113");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2025-32414");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL libxml2 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: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-2025-32414");

  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:"2023/06/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/07/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/07/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:libxml2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:python3-libxml2");
  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) 2025 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': [
    'libxml2-2.11.5-2.zncgsl7.7',
    'libxml2-devel-2.11.5-2.zncgsl7.7',
    'python3-libxml2-2.11.5-2.zncgsl7.7'
  ]
};
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, 'libxml2');
}