NewStart CGSL MAIN 7.02 : glibc Multiple Vulnerabilities (NS-SA-2026-0097)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2026-0097. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(343572);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/08");

  script_cve_id("CVE-2025-15281", "CVE-2026-0861", "CVE-2026-0915");
  script_xref(name:"IAVA", value:"2026-A-0102-S");

  script_name(english:"NewStart CGSL MAIN 7.02 : glibc Multiple Vulnerabilities (NS-SA-2026-0097)");

  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 glibc packages installed that are affected by multiple
vulnerabilities:

  - Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS
    backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version
    2.42 can leak stack contents to the configured DNS resolver. (CVE-2026-0915)

  - Passing too large an alignment to the memalign suite of functions (memalign, posix_memalign,
    aligned_alloc) in the GNU C Library version 2.30 to 2.42 may result in an integer overflow, which could
    consequently result in a heap corruption. Note that the attacker must have control over both, the size as
    well as the alignment arguments of the memalign function to be able to exploit this. The size parameter
    must be close enough to PTRDIFF_MAX so as to overflow size_t along with the large alignment argument. This
    limits the malicious inputs for the alignment for memalign to the range [1<<62+ 1, 1<<63] and exactly
    1<<63 for posix_memalign and aligned_alloc. Typically the alignment argument passed to such functions is a
    known constrained quantity (e.g. page size, block size, struct sizes) and is not attacker controlled,
    because of which this may not be easily exploitable in practice. An application bug could potentially
    result in the input alignment being too large, e.g. due to a different buffer overflow or integer overflow
    in the application or its dependent libraries, but that is again an uncommon usage pattern given typical
    sources of alignments. (CVE-2026-0861)

  - Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to
    version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on
    subsequent calls to wordfree may abort the process. (CVE-2025-15281)

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-2026-0097");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2025-15281");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-0861");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-0915");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL glibc 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:C/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2026-0915");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-0861");

  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:"2026/01/14");
  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:compat-libpthread-nonshared");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-all-langpacks");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-benchtests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-common-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-gconv-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-langpack-en");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-langpack-zh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-langpack-zh-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-locale-source");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-minimal-langpack");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-nss-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:libnsl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:nss_db");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:nss_hesiod");
  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': [
    'compat-libpthread-nonshared-2.38-3.zncgsl7.20',
    'glibc-2.38-3.zncgsl7.20',
    'glibc-all-langpacks-2.38-3.zncgsl7.20',
    'glibc-benchtests-2.38-3.zncgsl7.20',
    'glibc-common-2.38-3.zncgsl7.20',
    'glibc-common-core-2.38-3.zncgsl7.20',
    'glibc-core-2.38-3.zncgsl7.20',
    'glibc-devel-2.38-3.zncgsl7.20',
    'glibc-doc-2.38-3.zncgsl7.20',
    'glibc-gconv-extra-2.38-3.zncgsl7.20',
    'glibc-langpack-en-2.38-3.zncgsl7.20',
    'glibc-langpack-zh-2.38-3.zncgsl7.20',
    'glibc-langpack-zh-core-2.38-3.zncgsl7.20',
    'glibc-locale-source-2.38-3.zncgsl7.20',
    'glibc-minimal-langpack-2.38-3.zncgsl7.20',
    'glibc-nss-devel-2.38-3.zncgsl7.20',
    'glibc-static-2.38-3.zncgsl7.20',
    'glibc-utils-2.38-3.zncgsl7.20',
    'libnsl-2.38-3.zncgsl7.20',
    'nss_db-2.38-3.zncgsl7.20',
    'nss_hesiod-2.38-3.zncgsl7.20'
  ]
};
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, 'glibc');
}