TencentOS Server 3: ruby:3.1 (TSSA-2025:0359)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2025:0359.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(239788);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/04");

  script_cve_id(
    "CVE-2024-39908",
    "CVE-2024-41123",
    "CVE-2024-41946",
    "CVE-2024-43398",
    "CVE-2025-27219",
    "CVE-2025-27220",
    "CVE-2025-27221"
  );

  script_name(english:"TencentOS Server 3: ruby:3.1 (TSSA-2025:0359)");

  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-2025:0359 advisory.

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

    CVE-2024-39908:
     REXML is an XML toolkit for Ruby. The REXML gem before 3.3.1 has some DoS vulnerabilities when it parses
    an XML that has many specific characters such as <, 0 and %>. If you need to parse untrusted XMLs, you
    many be impacted to these vulnerabilities. The REXML gem 3.3.2 or later include the patches to fix these
    vulnerabilities. Users are advised to upgrade. Users unable to upgrade should avoid parsing untrusted XML
    strings.

    CVE-2024-41123:
    REXML is an XML toolkit for Ruby. The REXML gem before 3.3.2 has some DoS vulnerabilities when it parses
    an XML that has many specific characters such as whitespace character, >] and ]>. The REXML gem 3.3.3 or
    later include the patches to fix these vulnerabilities.

    CVE-2024-41946:
    REXML is an XML toolkit for Ruby. The REXML gem 3.3.2 has a DoS vulnerability when it parses an XML that
    has many entity expansions with SAX2 or pull parser API. The REXML gem 3.3.3 or later include the patch to
    fix the vulnerability.

    CVE-2024-43398:
    REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML
    that has many deep elements that have same local name attributes. If you need to parse untrusted XMLs with
    tree parser API like REXML::Document.new, you may be impacted to this vulnerability. If you use other
    parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected. The REXML
    gem 3.3.6 or later include the patch to fix the vulnerability.

    CVE-2025-27219:
    In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential
    Denial of Service (DoS) vulnerability. The method does not impose any limit on the length of the raw
    cookie value it processes. This oversight can lead to excessive resource consumption when parsing
    extremely large cookies.

    CVE-2025-27220:
    In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists
    in the Util#escapeElement method.

    CVE-2025-27221:
    In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an
    inadvertent leakage of authentication credentials because userinfo is retained even after changing the
    host.

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-20250359.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-27221");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2024-43398");

  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:"2025/04/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/04/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/06/16");

  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:ruby");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:rubygem-abrt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:rubygem-mysql2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:rubygem-pg");
  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) 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/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':'ruby-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-bundled-gems-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-bundled-gems-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-bundled-gems-debuginfo-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-bundled-gems-debuginfo-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-debuginfo-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-debuginfo-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-debugsource-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-debugsource-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-default-gems-3.1.7-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-devel-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-devel-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-doc-3.1.7-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-libs-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-libs-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-libs-debuginfo-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-libs-debuginfo-3.1.7-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-abrt-0.4.0-1.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-abrt-doc-0.4.0-1.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bigdecimal-3.1.1-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bigdecimal-3.1.1-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bigdecimal-debuginfo-3.1.1-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bigdecimal-debuginfo-3.1.1-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bundler-2.3.27-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-io-console-0.5.11-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-io-console-0.5.11-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-io-console-debuginfo-0.5.11-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-io-console-debuginfo-0.5.11-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-irb-1.4.1-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-json-2.6.1-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-json-2.6.1-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-json-debuginfo-2.6.1-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-json-debuginfo-2.6.1-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-minitest-5.15.0-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-0.5.3-3.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-0.5.3-3.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-debuginfo-0.5.3-3.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-debuginfo-0.5.3-3.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-debugsource-0.5.3-3.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-debugsource-0.5.3-3.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-doc-0.5.3-3.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-1.3.2-1.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-1.3.2-1.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-debuginfo-1.3.2-1.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-debuginfo-1.3.2-1.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-debugsource-1.3.2-1.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-debugsource-1.3.2-1.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-doc-1.3.2-1.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-power_assert-2.0.1-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-psych-4.0.4-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-psych-4.0.4-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-psych-debuginfo-4.0.4-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-psych-debuginfo-4.0.4-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rake-13.0.6-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rbs-2.7.0-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rbs-2.7.0-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rbs-debuginfo-2.7.0-145.module+el8.10.0+741+a1723c19', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rbs-debuginfo-2.7.0-145.module+el8.10.0+741+a1723c19', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rdoc-6.4.1.1-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rexml-3.3.9-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rss-0.3.1-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-test-unit-3.5.3-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-typeprof-0.21.3-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygems-3.3.27-145.module+el8.10.0+741+a1723c19', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygems-devel-3.3.27-145.module+el8.10.0+741+a1723c19', '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_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, 'ruby / ruby-bundled-gems / ruby-bundled-gems-debuginfo / etc');
}