CentOS Linux 8 [TuxCare] Security Update: glibc-langpack-bs / glibc-langpack-dz / glibc-langpack-ga / etc Multiple Vulnerabilities (CENTOS-STREAM8:CLSA-2025:1750692029)

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

include('compat.inc');

if (description)
{
  script_id(351645);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/30");

  script_cve_id(
    "CVE-2024-33600",
    "CVE-2024-33601",
    "CVE-2024-33602",
    "CVE-2025-4802"
  );
  script_xref(name:"CLSA", value:"2025:1750692029");

  script_name(english:"CentOS Linux 8 [TuxCare] Security Update: glibc-langpack-bs / glibc-langpack-dz / glibc-langpack-ga / etc Multiple Vulnerabilities (CENTOS-STREAM8:CLSA-2025:1750692029)");

  script_set_attribute(attribute:"synopsis", value:
"The CentOS Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
TuxCare CENTOS-STREAM8:CLSA-2025:1750692029 advisory.

  - nscd: Null pointer crashes after notfound response If the Name Service Cache Daemon's (nscd) cache fails
    to add a not-found netgroup response to the cache, the client request can result in a null pointer
    dereference. This flaw was introduced in glibc 2.15 when the cache was added to nscd. This vulnerability
    is only present in the nscd binary. (CVE-2024-33600)

  - nscd: netgroup cache may terminate daemon on memory allocation failure The Name Service Cache Daemon's
    (nscd) netgroup cache uses xmalloc or xrealloc and these functions may terminate the process due to a
    memory allocation failure resulting in a denial of service to the clients. The flaw was introduced in
    glibc 2.15 when the cache was added to nscd. This vulnerability is only present in the nscd binary.
    (CVE-2024-33601)

  - nscd: netgroup cache assumes NSS callback uses in-buffer strings The Name Service Cache Daemon's (nscd)
    netgroup cache can corrupt memory when the NSS callback does not store all strings in the provided buffer.
    The flaw was introduced in glibc 2.15 when the cache was added to nscd. This vulnerability is only present
    in the nscd binary. (CVE-2024-33602)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security.tuxcare.com/csaf/v2/els_os/centos-stream8els/advisories/2025/clsa-2025_1750692029.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c194a728");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2025:1750692029");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory CENTOS-STREAM8:CLSA-2025:1750692029.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-33602");

  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:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/05/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/06/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CentOS 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/OS/extended-third-party", "Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  exit(0);
}
include('rpm2.inc');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (empty_or_null(third_party_support) || third_party_support != 'TuxCare') exit(0, 'TuxCare support not enabled.');

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) || 'CentOS Linux' >!< os_product) audit(AUDIT_OS_NOT, 'CentOS Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS Linux');
if (! preg(pattern:"^8([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'CentOS Linux 8', 'CentOS Linux ' + os_version);

if (!get_kb_item('Host/CentOS/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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'CentOS Linux', cpu);


var constraints = [
  {
    'release': '8',
    'pkgs': [
      {'reference':'glibc-langpack-bs-2.28-251.el8.2.tuxcare.els2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-langpack-dz-2.28-251.el8.2.tuxcare.els2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-langpack-ga-2.28-251.el8.2.tuxcare.els2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-langpack-hne-2.28-251.el8.2.tuxcare.els2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-langpack-kl-2.28-251.el8.2.tuxcare.els2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-langpack-kok-2.28-251.el8.2.tuxcare.els2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-langpack-ml-2.28-251.el8.2.tuxcare.els2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-langpack-mn-2.28-251.el8.2.tuxcare.els2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-langpack-te-2.28-251.el8.2.tuxcare.els2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-langpack-to-2.28-251.el8.2.tuxcare.els2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

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, 'glibc-langpack-bs / glibc-langpack-dz / glibc-langpack-ga / etc');
}