TencentOS Server 2: glibc (TSSA-2024:0154)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2024:0154.
##

include('compat.inc');

if (description)
{
  script_id(276184);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/11");

  script_cve_id(
    "CVE-2024-2961",
    "CVE-2024-33599",
    "CVE-2024-33600",
    "CVE-2024-33601",
    "CVE-2024-33602"
  );
  script_xref(name:"IAVA", value:"2025-A-0062-S");

  script_name(english:"TencentOS Server 2: glibc (TSSA-2024:0154)");

  script_set_attribute(attribute:"synopsis", value:
"The remote TencentOS Server 2 host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The version of Tencent Linux installed on the remote TencentOS Server 2 host is prior to tested version. It is,
therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:0154 advisory.

    Package updates are available for TencentOS Server 2 that fix the following vulnerabilities:

    CVE-2024-2961:
    An out-of-bounds write flaw was found in the ISO-2022-CN-EXT plugin for glibc's iconv library. When
    converting from UCS4 charset, adding certain escape charterers is required to indicate where the charset
    was changed to the library. During this process, iconv improperly checks the boundaries of internal
    buffers, leading to a buffer overflow, which allows writing up to 3 bytes outside the desired memory
    location. This issue may allow an attacker to craft a malicious characters sequence that will trigger the
    out-of-bounds write and perform remote code execution, presenting a high impact to the Integrity,
    Confidentiality, and Availability triad.

    CVE-2024-33599:
    A stack-based buffer overflow flaw was found in the glibc netgroup cache. In certain conditions, its
    possible to trigger a stack-based buffer overflow condition that can lead to a denial of service and
    potentially other malicious actions that impact confidentiality and integrity.

    CVE-2024-33600:
    A flaw was found in the glibc netgroup cache. After a failed cache insertion, addgetnetgrentX tries to
    send the non-existing response after the not-found header. This can lead to a null pointer dereference
    that causes a crash or exit.

    CVE-2024-33601:
    A flaw was found in the glibc netgroup cache. The netgroup cache uses xmalloc/xrealloc and may terminate
    the process due to a memory allocation failure.

    CVE-2024-33602:
    A flaw was found in the glibc netgroup cache. The buffer-resizing code in addgetnetgrentX assumes that all
    string pointers point into the supplied buffer. This can potentially lead to memory corruption and cause a
    crash.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

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://mirrors.tencent.com/tlinux/errata/tssa-20240154.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-2961");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2024-33599");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'CosmicSting: Magento Arbitrary File Read (CVE-2024-34102) + PHP Buffer Overflow in the iconv() function of glibc (CVE-2024-2961)');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/04/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/06/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:tencent:tencentos_server:2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:glibc");
  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:"Tencent Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/etc/os-release", "Host/TencentOS/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) || 'TencentOS' >!< os_product) audit(AUDIT_OS_NOT, 'TencentOS');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'TencentOS');
if (! preg(pattern:"^2([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'TencentOS 2.x', 'TencentOS ' + os_version);

if (!get_kb_item('Host/TencentOS/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$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'TencentOS', cpu);

var constraints = [
  {
    'release': '2',
    'pkgs': [
      {'reference':'glibc-2.17-326.tl2.3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-common-2.17-326.tl2.3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-debuginfo-2.17-326.tl2.3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-debuginfo-common-2.17-326.tl2.3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-devel-2.17-326.tl2.3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-headers-2.17-326.tl2.3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-static-2.17-326.tl2.3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glibc-utils-2.17-326.tl2.3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'nscd-2.17-326.tl2.3', '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 / glibc-common / glibc-debuginfo / etc');
}