Oracle Linux 8 : postgresql:10 (ELSA-2024-0956)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2024-0956.
##

include('compat.inc');

if (description)
{
  script_id(191105);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/24");

  script_cve_id("CVE-2024-0985");
  script_xref(name:"IAVB", value:"2024-B-0009-S");

  script_name(english:"Oracle Linux 8 : postgresql:10 (ELSA-2024-0956)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the
ELSA-2024-0956 advisory.

  - Late privilege drop in REFRESH MATERIALIZED VIEW CONCURRENTLY in PostgreSQL allows an object creator to
    execute arbitrary SQL functions as the command issuer. The command intends to run SQL functions as the
    owner of the materialized view, enabling safe refresh of untrusted materialized views. The victim is a
    superuser or member of one of the attacker's roles. The attack requires luring the victim into running
    REFRESH MATERIALIZED VIEW CONCURRENTLY on the attacker's materialized view. As part of exploiting this
    vulnerability, the attacker creates functions that use CREATE RULE to convert the internally-built
    temporary table to a view. Versions before PostgreSQL 15.6, 14.11, 13.14, and 12.18 are affected. The only
    known exploit does not work in PostgreSQL 16 and later. For defense in depth, PostgreSQL 16.2 adds the
    protections that older branches are using to fix their vulnerability. (CVE-2024-0985)

Note that Nessus has not tested for this issue 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-2024-0956.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:R/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-2024-0985");

  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:"2024/02/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/02/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:linux:8::appstream");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8");
  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-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) 2024 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('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_release = get_kb_item("Host/RedHat/release");
if (isnull(os_release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 8', 'Oracle Linux ' + os_ver);

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:10');
if ('10' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module postgresql:' + module_ver);

var appstreams = {
    'postgresql:10': [
      {'reference':'postgresql-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-contrib-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-docs-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-plperl-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-plpython3-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-pltcl-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-server-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-server-devel-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-static-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-test-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-test-rpm-macros-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-upgrade-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-upgrade-devel-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-contrib-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-docs-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-plperl-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-plpython3-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-pltcl-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-server-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-server-devel-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-static-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-test-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-test-rpm-macros-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-upgrade-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-upgrade-devel-10.23-4.0.1.module+el8.9.0+90164+87901204', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
    ]
};

var flag = 0;
var appstreams_found = 0;
foreach var module (keys(appstreams)) {
  var appstream = NULL;
  var appstream_name = NULL;
  var appstream_version = NULL;
  var 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 package_array ( appstreams[module] ) {
      var reference = NULL;
      var _release = NULL;
      var sp = NULL;
      var _cpu = NULL;
      var el_string = NULL;
      var rpm_spec_vers_cmp = NULL;
      var epoch = NULL;
      var allowmaj = NULL;
      if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
      if (!empty_or_null(package_array['release'])) _release = 'EL' + package_array['release'];
      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 (reference && _release) {
        if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
      }
    }
  }
}

if (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module postgresql:10');

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, 'postgresql / postgresql-contrib / postgresql-docs / etc');
}