AlmaLinux 9.2 [TuxCare] Security Update: ruby / ruby-default-gems / ruby-devel / ruby-doc / ruby-libs / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1746653856)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(362320);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/01");

  script_cve_id(
    "CVE-2024-41123",
    "CVE-2024-41946",
    "CVE-2025-27219",
    "CVE-2025-27220"
  );
  script_xref(name:"CLSA", value:"2025:1746653856");

  script_name(english:"AlmaLinux 9.2 [TuxCare] Security Update: ruby / ruby-default-gems / ruby-devel / ruby-doc / ruby-libs / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1746653856)");

  script_set_attribute(attribute:"synopsis", value:
"The AlmaLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare
ALMALINUX9.2:CLSA-2025:1746653856 advisory.

  - 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-2024-41123)

  - 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-2024-41946)

  - 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-2025-27219)

  - 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-2025-27220)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/advisories/2025/clsa-2025_1746653856.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?94f57419");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2025:1746653856");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory ALMALINUX9.2:CLSA-2025:1746653856.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/UI:N/S:U/C:N/I:N/A:H");
  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:L/AT:N/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-2025-27220");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2024-41946");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/08/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/05/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Alma Linux 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/OS/extended-third-party", "Host/local_checks_enabled", "Host/AlmaLinux/release", "Host/AlmaLinux/rpm-list", "Host/cpu");

  exit(0);
}
include('rpm2.inc');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (empty_or_null(third_party_support) || third_party_support != 'TuxCare') exit(0, 'TuxCare support not enabled.');

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) || 'AlmaLinux' >!< os_product) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
if (! preg(pattern:"^9.2([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'AlmaLinux 9.2', 'AlmaLinux ' + os_version);

if (!get_kb_item('Host/AlmaLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);


var constraints = [
  {
    'release': '9',
    'sp': '2',
    'pkgs': [
      {'reference':'ruby-3.0.4-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'i686', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-3.0.4-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-default-gems-3.0.4-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-devel-3.0.4-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'i686', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-devel-3.0.4-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-doc-3.0.4-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-libs-3.0.4-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'i686', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'ruby-libs-3.0.4-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bigdecimal-3.0.0-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'i686', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bigdecimal-3.0.0-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-bundler-2.2.33-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-io-console-0.5.7-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'i686', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-io-console-0.5.7-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-irb-1.3.5-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-json-2.5.1-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'i686', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-json-2.5.1-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-minitest-5.14.2-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-power_assert-1.2.0-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-psych-3.3.2-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'i686', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-psych-3.3.2-160.el9_0.tuxcare.els4', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rake-13.0.3-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rbs-1.4.0-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rdoc-6.3.3-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rexml-3.3.3-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-rss-0.2.9-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-test-unit-3.3.7-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygem-typeprof-0.15.2-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygems-3.2.33-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rubygems-devel-3.2.33-160.el9_0.tuxcare.els4', 'sp':'2', 'el_string':'el9_0', '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, 'ruby / ruby-default-gems / ruby-devel / ruby-doc / ruby-libs / etc');
}