AlmaLinux 8 : ruby:2.5 (ALSA-2026:73519)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# AlmaLinux Security Advisory ALSA-2026:73519.
##

include('compat.inc');

if (description)
{
  script_id(363155);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/06");

  script_cve_id("CVE-2026-80212", "CVE-2026-88030");
  script_xref(name:"ALSA", value:"2026:73519");
  script_xref(name:"RHSA", value:"2026:73519");

  script_name(english:"AlmaLinux 8 : ruby:2.5 (ALSA-2026:73519)");

  script_set_attribute(attribute:"synopsis", value:
"The remote AlmaLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ALSA-2026:73519 advisory.

    * resolv: resolv gem: Denial of Service via uncontrolled memory growth from crafted DNS responses
    (CVE-2026-80212)
      * rubygem-mongo: MongoDB Ruby Driver: Data disclosure and denial of service via query-operator injection
    (CVE-2026-88030)

Tenable has extracted the preceding description block directly from the AlmaLinux 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://errata.almalinux.org/8/ALSA-2026-73519.html");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:73519");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/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:L/UI:N/S:U/C:L/I:H/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:P/PR:L/UI:N/VC:L/VI:H/VA:H/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-2026-88030");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(770, 917);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/08/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:ruby");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:ruby-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:ruby-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:ruby-irb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:ruby-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-abrt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-abrt-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-bigdecimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-bson");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-bson-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-bundler");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-bundler-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-did_you_mean");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-io-console");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-json");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-minitest");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-mongo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-mongo-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-mysql2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-mysql2-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-net-telnet");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-pg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-pg-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-power_assert");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-psych");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-rake");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-rdoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-test-unit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygem-xmlrpc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygems");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:rubygems-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::appstream");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::baseos");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::highavailability");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::nfv");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::powertools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::realtime");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::resilientstorage");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::sap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::sap_hana");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::supplementary");
  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_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AlmaLinux/release", "Host/AlmaLinux/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) || '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:"^8([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'AlmaLinux 8.x', '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 ('aarch64' >!< cpu && 'ppc' >!< cpu && 's390' >!< cpu && 'x86_64' >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);

var module_ver = get_kb_item('Host/AlmaLinux/appstream/ruby');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module ruby:2.5');
if ('2.5' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module ruby:' + module_ver);

var constraints = {
  'ruby:2.5': [
    {
      'release': '8',
      'pkgs': [
        {'reference':'ruby-2.5.9-116.module_el8.10.0+4294+1072b022', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'ruby-devel-2.5.9-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'ruby-doc-2.5.9-116.module_el8.10.0+4294+1072b022', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'ruby-irb-2.5.9-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'ruby-libs-2.5.9-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-abrt-0.3.0-4.module_el8.5.0+2625+ec418553', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-abrt-doc-0.3.0-4.module_el8.10.0+3871+342e2c2f', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-bigdecimal-1.3.4-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-bson-4.3.0-2.module_el8.5.0+259+8cec6917', 'cpu':'aarch64', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-bson-4.3.0-2.module_el8.5.0+259+8cec6917', 'cpu':'ppc64le', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-bson-4.3.0-2.module_el8.5.0+259+8cec6917', 'cpu':'s390x', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-bson-4.3.0-2.module_el8.5.0+259+8cec6917', 'cpu':'x86_64', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-bson-doc-4.3.0-2.module_el8.5.0+2625+ec418553', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-bundler-1.16.1-5.module_el8.10.0+3991+5e651d4e', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-bundler-doc-1.16.1-5.module_el8.10.0+3991+5e651d4e', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-did_you_mean-1.2.0-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-io-console-0.4.6-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-json-2.1.0-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-minitest-5.10.3-116.module_el8.10.0+4294+1072b022', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-mongo-2.5.1-3.module_el8.10.0+4294+1072b022', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-mongo-doc-2.5.1-3.module_el8.10.0+4294+1072b022', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-mysql2-0.4.10-4.module_el8.5.0+259+8cec6917', 'cpu':'aarch64', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-mysql2-0.4.10-4.module_el8.5.0+259+8cec6917', 'cpu':'ppc64le', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-mysql2-0.4.10-4.module_el8.5.0+259+8cec6917', 'cpu':'s390x', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-mysql2-0.4.10-4.module_el8.5.0+259+8cec6917', 'cpu':'x86_64', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-mysql2-doc-0.4.10-4.module_el8.5.0+2625+ec418553', 'el_string':'el8.5.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-net-telnet-0.1.1-116.module_el8.10.0+4294+1072b022', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-openssl-2.1.2-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-pg-1.0.0-3.module_el8.9.0+3635+c6f99506', 'cpu':'aarch64', 'el_string':'el8.9.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-pg-1.0.0-3.module_el8.9.0+3635+c6f99506', 'cpu':'ppc64le', 'el_string':'el8.9.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-pg-1.0.0-3.module_el8.9.0+3635+c6f99506', 'cpu':'s390x', 'el_string':'el8.9.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-pg-1.0.0-3.module_el8.9.0+3635+c6f99506', 'cpu':'x86_64', 'el_string':'el8.9.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-pg-doc-1.0.0-3.module_el8.9.0+3635+c6f99506', 'el_string':'el8.9.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-power_assert-1.1.1-116.module_el8.10.0+4294+1072b022', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-psych-3.0.2-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-rake-12.3.3-116.module_el8.10.0+4294+1072b022', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-rdoc-6.0.1.1-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-test-unit-3.2.7-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygem-xmlrpc-0.3.0-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygems-2.7.6.3-116.module_el8.10.0+4294+1072b022', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'rubygems-devel-2.7.6.3-116.module_el8.10.0+4293+d4d7c902', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'}
      ]
    }
  ]
};

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;
var appstreams_found = 0;
var appstream;
var appstream_name;
var appstream_version;
foreach var module (keys(constraints)) {
  appstream = NULL;
  appstream_name = NULL;
  appstream_version = NULL;
  appstream_split = split(module, sep:':', keep:FALSE);
  if (!empty_or_null(appstream_split)) {
    appstream_name = appstream_split[0];
    appstream_version = appstream_split[1];
    if (!empty_or_null(appstream_name)) appstream = get_one_kb_item('Host/AlmaLinux/appstream/' + appstream_name);
  }
  if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
    appstreams_found++;
    foreach var module_array ( constraints[module] ) {
      # Check that the target release is equal to the affected release
      if (!empty_or_null(module_array['release'])){
        if (module_array['release'] != os_release) continue;
      }
      if (!empty_or_null(module_array['sp'])){
        if (module_array['sp'] != os_sp) continue;
      }
      foreach var package_array ( module_array['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(package_array['reference'])) reference = package_array['reference'];
        if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
        if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
        if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
        if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
        if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
        if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
        if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
        if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
        if (reference &&
            (!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 (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module ruby:2.5');

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-devel / ruby-doc / ruby-irb / ruby-libs / rubygem-abrt / etc');
}