Oracle Linux 9 : postgresql:15 (ELSA-2026-3896)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2026-3896.
##

include('compat.inc');

if (description)
{
  script_id(301553);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/09");

  script_cve_id("CVE-2026-2004", "CVE-2026-2005", "CVE-2026-2006");
  script_xref(name:"IAVB", value:"2026-B-0047");

  script_name(english:"Oracle Linux 9 : postgresql:15 (ELSA-2026-3896)");

  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-2026-3896 advisory.

    pgaudit
    [1.7.0-1]
    - Initial import for postgresql 15 module
    - Update to 1.7.0
    - Support postgresql 15
    - Related: #2128410

    pg_repack
    [1.4.8-2]
    - Add new build dependencies to fix build with lz4 enabled
    - Related: RHEL-47350

    [1.4.8-1]
    - Update to version 1.4.8
    - Postgresql 15 is supported
    - Related: #2128410

    postgres-decoderbufs
    [1.9.7-1.Final]
    - Iitial import for postgresql 15 stream
    - Related: #2128410

    postgresql
    [15.17-1]
    - Update to 15.17
    - Fixes: CVE-2026-2004 CVE-2026-2005 CVE-2026-2006

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-2026-3896.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/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:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-2006");

  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:"2026/02/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/09");

  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:"p-cpe:/a:oracle:linux:pg_repack");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:pgaudit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgres-decoderbufs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-contrib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-plperl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-plpython3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-pltcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-private-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-private-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-server-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-test-rpm-macros");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-upgrade");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-upgrade-devel");
  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 module_ver = get_kb_item('Host/RedHat/appstream/postgresql');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module postgresql:15');
if ('15' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module postgresql:' + module_ver);

var constraints = {
  'postgresql:15': [
    {
      'release': '9',
      'pkgs': [
        {'reference':'pg_repack-1.4.8-2.module+el9.5.0+90424+300303e9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'pgaudit-1.7.0-1.module+el9.2.0+21134+ceb95ed9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgres-decoderbufs-1.9.7-1.Final.module+el9.2.0+21134+ceb95ed9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-contrib-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-docs-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-plperl-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-plpython3-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-pltcl-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-private-devel-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-private-libs-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-server-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-server-devel-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-static-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-test-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-test-rpm-macros-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-upgrade-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-upgrade-devel-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'pg_repack-1.4.8-2.module+el9.5.0+90424+300303e9', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'pgaudit-1.7.0-1.module+el9.2.0+21134+ceb95ed9', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgres-decoderbufs-1.9.7-1.Final.module+el9.2.0+21134+ceb95ed9', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-contrib-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-docs-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-plperl-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-plpython3-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-pltcl-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-private-devel-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-private-libs-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-server-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-server-devel-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-static-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-test-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-test-rpm-macros-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-upgrade-15.17-1.module+el9.7.0+90829+0e33913e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-upgrade-devel-15.17-1.module+el9.7.0+90829+0e33913e', '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;
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/RedHat/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 postgresql:15');

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, 'pg_repack / pgaudit / postgres-decoderbufs / etc');
}