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TencentOS Server 3: idm:DL1 (TSSA-2025:1008)

🗓️ 16 Mar 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 3 Views

TencentOS Server 3 FreeIPA privilege escalation via krbCanonicalName validation; update advisory.

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Refs
Code
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2025:1008.
##

include('compat.inc');

if (description)
{
  script_id(302520);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/16");

  script_cve_id("CVE-2025-7493");

  script_name(english:"TencentOS Server 3: idm:DL1 (TSSA-2025:1008)");

  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 a vulnerability as referenced in the TSSA-2025:1008 advisory.

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

    CVE-2025-7493:
    A privilege escalation flaw from host to domain administrator was found in FreeIPA. This vulnerability is
    similar to CVE-2025-4404, where it fails to validate the uniqueness of the krbCanonicalName. While the
    previously released version added validations for the admin@REALM credential, FreeIPA still does not
    validate the root@REALM canonical name, which can also be used as the realm administrator's name. This
    flaw allows an attacker to perform administrative tasks over the REALM, leading to access to sensitive
    data and sensitive data exfiltration.

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

Note that Nessus has not tested for this issue 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-20251008.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:C");
  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:H/UI:N/S:C/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-2025-7493");

  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:"2025/09/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/10/01");
  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');
}

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16 Mar 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.19.1
EPSS0.00112
SSVC
3