NewStart CGSL MAIN 7.02 : glibc Multiple Vulnerabilities (NS-SA-2025-0171)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2025-0171. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(242700);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/07/25");

  script_cve_id(
    "CVE-2023-4527",
    "CVE-2023-4806",
    "CVE-2023-4911",
    "CVE-2023-5156",
    "CVE-2023-6246",
    "CVE-2023-6779",
    "CVE-2023-6780",
    "CVE-2024-2961",
    "CVE-2024-33599",
    "CVE-2024-33600",
    "CVE-2024-33601",
    "CVE-2024-33602"
  );
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2023/12/12");
  script_xref(name:"IAVA", value:"2025-A-0062-S");

  script_name(english:"NewStart CGSL MAIN 7.02 : glibc Multiple Vulnerabilities (NS-SA-2025-0171)");

  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:

  - A heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This
    function is called by the syslog and vsyslog functions. This issue occurs when the openlog function was
    not called, or called with the ident argument set to NULL, and the program name (the basename of argv[0])
    is bigger than 1024 bytes, resulting in an application crash or local privilege escalation. This issue
    affects glibc 2.36 and newer. (CVE-2023-6246)

  - A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and
    the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048
    bytes can potentially disclose stack contents through the function returned address data, and may cause a
    crash. (CVE-2023-4527)

  - A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that
    has been freed, resulting in an application crash. This issue is only exploitable when a NSS module
    implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the
    _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the
    call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and
    AI_V4MAPPED as flags. (CVE-2023-4806)

  - A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the
    GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted
    GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with
    elevated privileges. (CVE-2023-4911)

  - A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a
    memory leak, which may result in an application crash. (CVE-2023-5156)

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-2025-0171");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-4527");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-4806");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-4911");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-5156");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-6246");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-6779");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-6780");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2024-2961");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2024-33599");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2024-33600");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2024-33601");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2024-33602");
  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:L/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-6246");

  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: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-common");
  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-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-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-static");
  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:"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': [
    'compat-libpthread-nonshared-2.38-3.zncgsl7.11',
    'glibc-2.38-3.zncgsl7.11',
    'glibc-all-langpacks-2.38-3.zncgsl7.11',
    'glibc-common-2.38-3.zncgsl7.11',
    'glibc-devel-2.38-3.zncgsl7.11',
    'glibc-gconv-extra-2.38-3.zncgsl7.11',
    'glibc-langpack-en-2.38-3.zncgsl7.11',
    'glibc-langpack-zh-2.38-3.zncgsl7.11',
    'glibc-locale-source-2.38-3.zncgsl7.11',
    'glibc-minimal-langpack-2.38-3.zncgsl7.11',
    'glibc-static-2.38-3.zncgsl7.11',
    'libnsl-2.38-3.zncgsl7.11',
    'nss_db-2.38-3.zncgsl7.11'
  ]
};
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_WARNING,
    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');
}