TencentOS Server 3: idm:DL1 (TSSA-2025:1009)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2025:1009.
##

include('compat.inc');

if (description)
{
  script_id(302518);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/16");

  script_cve_id("CVE-2025-59088", "CVE-2025-59089");

  script_name(english:"TencentOS Server 3: idm:DL1 (TSSA-2025:1009)");

  script_set_attribute(attribute:"synopsis", value:
"The remote TencentOS Server 3 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 3 host is prior to tested version. It is,
therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:1009 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

    CVE-2025-59088:
    If kdcproxy receives a request for a realm which does not have server addresses defined in its
    configuration, by default, it will query SRV records in the DNS zone matching the requested realm name.
    This creates a server-side request forgery vulnerability, since an attacker could send a request for a
    realm matching a DNS zone where they created SRV records pointing to arbitrary ports and hostnames (which
    may resolve to loopback or internal IP addresses). This vulnerability can be exploited to probe internal
    network topology and firewall rules, perform port scanning, and exfiltrate data. Deployments where
    the use_dns setting is explicitly set to false are not affected.

    CVE-2025-59089:
    If an attacker causes kdcproxy to connect to an attacker-controlled KDC server (e.g. through server-side
    request forgery), they can exploit the fact that kdcproxy does not enforce bounds on TCP response length
    to conduct a denial-of-service attack. While receiving the KDC's response, kdcproxy copies the entire
    buffered stream into a new
    buffer on each recv() call, even when the transfer is incomplete, causing excessive memory allocation and
    CPU usage. Additionally, kdcproxy accepts incoming response chunks as long as the received data length is
    not exactly equal to the length indicated in the response
    header, even when individual chunks or the total buffer exceed the maximum length of a Kerberos message.
    This allows an attacker to send unbounded data until the connection timeout is reached (approximately 12
    seconds), exhausting server memory or CPU resources. Multiple concurrent requests can cause accept queue
    overflow, denying service to legitimate clients.

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-20251009.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-59088");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/11/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:tencent:tencentos_server:3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:bind-dyndb-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:ipa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:ipa-healthcheck");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:opendnssec");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:python-jwcrypto");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:python-kdcproxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:python-qrcode");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:python-yubico");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:pyusb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:slapi-nis");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:softhsm");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Tencent 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/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:"^3([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'TencentOS 3.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': '3',
    'pkgs': [
      {'reference':'bind-dyndb-ldap-11.6-6.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dyndb-ldap-11.6-6.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dyndb-ldap-debuginfo-11.6-6.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dyndb-ldap-debuginfo-11.6-6.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dyndb-ldap-debugsource-11.6-6.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dyndb-ldap-debugsource-11.6-6.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-client-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-client-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-client-common-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-client-debuginfo-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-client-debuginfo-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-client-epn-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-client-epn-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-client-samba-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-client-samba-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-common-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-debuginfo-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-debuginfo-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-debugsource-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-debugsource-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-healthcheck-core-0.12-6.module+el8.10.0+769+8d787cb7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-python-compat-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-selinux-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-server-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-server-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-server-common-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-server-debuginfo-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-server-debuginfo-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-server-dns-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-server-trust-ad-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-server-trust-ad-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-server-trust-ad-debuginfo-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ipa-server-trust-ad-debuginfo-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'opendnssec-2.1.7-2.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'opendnssec-2.1.7-2.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'opendnssec-debuginfo-2.1.7-2.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'opendnssec-debuginfo-2.1.7-2.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'opendnssec-debugsource-2.1.7-2.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'opendnssec-debugsource-2.1.7-2.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-ipaclient-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-ipalib-4.9.13-20.module+el8.10.0+782+c76688a0.ap.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-ipaserver-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-ipatests-4.9.13-21.module+el8.10.0+848+559537a1.ap.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-jwcrypto-0.5.0-2.module+el8.10.0+679+30f0851e', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-kdcproxy-0.4-5.module+el8.10.0+760+64a9b580.1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-pyusb-1.0.0-9.1.module+el8.10.0+848+559537a1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-qrcode-5.3-1.module+el8.10.0+760+64a9b580', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-qrcode-core-5.3-1.module+el8.10.0+760+64a9b580', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-yubico-1.3.2-9.1.module+el8.10.0+848+559537a1', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'slapi-nis-0.60.0-4.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'slapi-nis-0.60.0-4.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'slapi-nis-debuginfo-0.60.0-4.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'slapi-nis-debuginfo-0.60.0-4.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'slapi-nis-debugsource-0.60.0-4.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'slapi-nis-debugsource-0.60.0-4.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'softhsm-2.6.0-5.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'softhsm-2.6.0-5.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'softhsm-debuginfo-2.6.0-5.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'softhsm-debuginfo-2.6.0-5.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'softhsm-debugsource-2.6.0-5.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'softhsm-debugsource-2.6.0-5.module+el8.10.0+760+64a9b580', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'softhsm-devel-2.6.0-5.module+el8.10.0+760+64a9b580', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'softhsm-devel-2.6.0-5.module+el8.10.0+760+64a9b580', '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, 'bind-dyndb-ldap / bind-dyndb-ldap-debuginfo / bind-dyndb-ldap-debugsource / etc');
}