Oracle Linux 9 : glib2 (ELSA-2026-55440)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2026-55440.
##

include('compat.inc');

if (description)
{
  script_id(338017);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/19");

  script_cve_id(
    "CVE-2026-15588",
    "CVE-2026-58010",
    "CVE-2026-58011",
    "CVE-2026-58012",
    "CVE-2026-58013",
    "CVE-2026-58014",
    "CVE-2026-58015"
  );
  script_xref(name:"IAVA", value:"2026-A-0684");

  script_name(english:"Oracle Linux 9 : glib2 (ELSA-2026-55440)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2026-55440 advisory.

    - Fix CVE-2026-15588: limit D-Bus auth line read length
    - Fix CVE-2026-58010: off-by-one in GVariant tuple offset checking
    - Fix CVE-2026-58012: buffer overflow in gregex.c with G_REGEX_RAW
    - Fix CVE-2026-58011: range validation in g_date_time_add_full()
    - Fix CVE-2026-58013: buffer over-read in GIOChannel with long terminators
    - Fix CVE-2026-58014: heap under-read in g_key_file_get_locale_string_list
    - Fix CVE-2026-58015: validate D-Bus DBUS_COOKIE_SHA1 cookie context

Tenable has extracted the preceding description block directly from the Oracle 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://linux.oracle.com/errata/ELSA-2026-55440.html");
  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:P/A:C");
  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:L/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-58014");

  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:"2026/06/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:9");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:9:8:baseos_patch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:glib2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:glib2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:glib2-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:glib2-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:glib2-tests");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle 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/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  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) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_product)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
if (! preg(pattern:"^9([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Oracle Linux 9.x', 'Oracle Linux ' + os_version);

if (!get_kb_item('Host/RedHat/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$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);

var constraints = [
  {
    'release': '9',
    'pkgs': [
      {'reference':'glib2-2.68.4-19.el9_8.9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-devel-2.68.4-19.el9_8.9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-doc-2.68.4-19.el9_8.9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-static-2.68.4-19.el9_8.9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-tests-2.68.4-19.el9_8.9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-2.68.4-19.el9_8.9', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-devel-2.68.4-19.el9_8.9', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-static-2.68.4-19.el9_8.9', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-2.68.4-19.el9_8.9', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-devel-2.68.4-19.el9_8.9', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-doc-2.68.4-19.el9_8.9', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-static-2.68.4-19.el9_8.9', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'glib2-tests-2.68.4-19.el9_8.9', '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, 'glib2 / glib2-devel / glib2-doc / etc');
}