TencentOS Server 3: ruby:3.3 (TSSA-2025:0560)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2025:0560.
##

include('compat.inc');

if (description)
{
  script_id(276200);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/04");

  script_cve_id("CVE-2025-25186", "CVE-2025-27219", "CVE-2025-27221");

  script_name(english:"TencentOS Server 3: ruby:3.3 (TSSA-2025:0560)");

  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-2025:0560 advisory.

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

    CVE-2025-25186:
    Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Starting in
    version 0.3.2 and prior to versions 0.3.8, 0.4.19, and 0.5.6, there is a possibility for denial of service
    by memory exhaustion in net-imap's response parser.  At any time while the client is connected, a
    malicious server can send  can send highly compressed uid-set data which is automatically read by the
    client's receiver thread. The response parser uses Range#to_a to convert the uid-set data into arrays of
    integers, with no limitation on the expanded size of the ranges. Versions 0.3.8, 0.4.19, 0.5.6, and higher
    fix this issue. Additional details for proper configuration of fixed versions and backward compatibility
    are available in the GitHub Security Advisory.

    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-2025-27221:
    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-20250560.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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-27221");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2025-27219");

  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:"2025/02/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/07/02");
  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: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-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-bundled-gems-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-bundled-gems-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-bundled-gems-debuginfo-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-bundled-gems-debuginfo-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-debuginfo-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-debuginfo-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-debugsource-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-debugsource-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-default-gems-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-devel-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-devel-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-doc-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-libs-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-libs-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-libs-debuginfo-3.3.8-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-libs-debuginfo-3.3.8-4.module+el8.10.0+762+6c3c14ce', '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-3.1.5-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bigdecimal-3.1.5-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bigdecimal-debuginfo-3.1.5-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bigdecimal-debuginfo-3.1.5-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bundler-2.5.22-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-io-console-0.7.1-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-io-console-0.7.1-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-io-console-debuginfo-0.7.1-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-io-console-debuginfo-0.7.1-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-irb-1.13.1-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-json-2.7.2-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-json-2.7.2-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-json-debuginfo-2.7.2-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-json-debuginfo-2.7.2-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-minitest-5.20.0-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-0.5.5-1.module+el8.8.0+649+3e15597a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-0.5.5-1.module+el8.8.0+649+3e15597a', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-debuginfo-0.5.5-1.module+el8.8.0+649+3e15597a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-debuginfo-0.5.5-1.module+el8.8.0+649+3e15597a', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-debugsource-0.5.5-1.module+el8.8.0+649+3e15597a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-debugsource-0.5.5-1.module+el8.8.0+649+3e15597a', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-mysql2-doc-0.5.5-1.module+el8.8.0+649+3e15597a', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-1.5.4-1.module+el8.8.0+649+3e15597a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-1.5.4-1.module+el8.8.0+649+3e15597a', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-debuginfo-1.5.4-1.module+el8.8.0+649+3e15597a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-debuginfo-1.5.4-1.module+el8.8.0+649+3e15597a', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-debugsource-1.5.4-1.module+el8.8.0+649+3e15597a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-debugsource-1.5.4-1.module+el8.8.0+649+3e15597a', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-pg-doc-1.5.4-1.module+el8.8.0+649+3e15597a', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-power_assert-2.0.3-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-psych-5.1.2-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-psych-5.1.2-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-psych-debuginfo-5.1.2-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-psych-debuginfo-5.1.2-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-racc-1.7.3-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-racc-1.7.3-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-racc-debuginfo-1.7.3-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-racc-debuginfo-1.7.3-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rake-13.1.0-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rbs-3.4.0-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rbs-3.4.0-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rbs-debuginfo-3.4.0-4.module+el8.10.0+762+6c3c14ce', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rbs-debuginfo-3.4.0-4.module+el8.10.0+762+6c3c14ce', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rdoc-6.6.3.1-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rexml-3.3.9-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rss-0.3.1-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-test-unit-3.6.1-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-typeprof-0.21.9-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygems-3.5.22-4.module+el8.10.0+762+6c3c14ce', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygems-devel-3.5.22-4.module+el8.10.0+762+6c3c14ce', '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');
}