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nessusThis script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.REDHAT-RHSA-2023-7883.NASL
HistoryJan 26, 2024 - 12:00 a.m.

RHEL 8 : postgresql:15 (RHSA-2023:7883)

2024-01-2600:00:00
This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
7
redhat enterprise linux 8
postgresql 15
vulnerabilities
sql injection
arbitrary code execution
sensitive information access
denial of service

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.7 High

AI Score

Confidence

Low

0.015 Low

EPSS

Percentile

86.7%

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7883 advisory.

  • postgresql: Memory disclosure in aggregate function calls (CVE-2023-5868)

  • postgresql: Buffer overrun from integer overflow in array modification (CVE-2023-5869)

  • postgresql: Role pg_signal_backend can signal certain superuser processes. (CVE-2023-5870)

  • postgresql: extension script @substitutions@ within quoting allow SQL injection (CVE-2023-39417)

  • postgresql: MERGE fails to enforce UPDATE or SELECT row security policies (CVE-2023-39418)

Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2023:7883. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(189663);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/28");

  script_cve_id(
    "CVE-2023-5868",
    "CVE-2023-5869",
    "CVE-2023-5870",
    "CVE-2023-39417",
    "CVE-2023-39418"
  );
  script_xref(name:"IAVB", value:"2023-B-0060-S");
  script_xref(name:"RHSA", value:"2023:7883");
  script_xref(name:"IAVB", value:"2023-B-0088-S");

  script_name(english:"RHEL 8 : postgresql:15 (RHSA-2023:7883)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for postgresql:15.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2023:7883 advisory.

  - postgresql: Memory disclosure in aggregate function calls (CVE-2023-5868)

  - postgresql: Buffer overrun from integer overflow in array modification (CVE-2023-5869)

  - postgresql: Role pg_signal_backend can signal certain superuser processes. (CVE-2023-5870)

  - postgresql: extension script @substitutions@ within quoting allow SQL injection (CVE-2023-39417)

  - postgresql: MERGE fails to enforce UPDATE or SELECT row security policies (CVE-2023-39418)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7883.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?41eb6d85");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2228111");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2228112");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2247168");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2247169");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2247170");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2023:7883");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL postgresql:15 package based on the guidance in RHSA-2023:7883.");
  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-2023-5869");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(89, 190, 400, 686);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/08/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/12/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_eus:8.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pg_repack");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pgaudit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgres-decoderbufs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-contrib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-plperl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-plpython3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-pltcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-private-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-private-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-server-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-test-rpm-macros");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:postgresql-upgrade");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_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:"Red Hat 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", "redhat_repos.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm.inc');
include('rhel.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'eq', os_version: os_ver, rhel_version: '8.8')) audit(AUDIT_OS_NOT, 'Red Hat 8.8', 'Red Hat ' + 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$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var appstreams = {
  'postgresql:15': [
    {
      'repo_relative_urls': [
        'content/e4s/rhel8/8.8/ppc64le/appstream/debug',
        'content/e4s/rhel8/8.8/ppc64le/appstream/os',
        'content/e4s/rhel8/8.8/ppc64le/appstream/source/SRPMS',
        'content/e4s/rhel8/8.8/x86_64/appstream/debug',
        'content/e4s/rhel8/8.8/x86_64/appstream/os',
        'content/e4s/rhel8/8.8/x86_64/appstream/source/SRPMS',
        'content/eus/rhel8/8.8/aarch64/appstream/debug',
        'content/eus/rhel8/8.8/aarch64/appstream/os',
        'content/eus/rhel8/8.8/aarch64/appstream/source/SRPMS',
        'content/eus/rhel8/8.8/ppc64le/appstream/debug',
        'content/eus/rhel8/8.8/ppc64le/appstream/os',
        'content/eus/rhel8/8.8/ppc64le/appstream/source/SRPMS',
        'content/eus/rhel8/8.8/s390x/appstream/debug',
        'content/eus/rhel8/8.8/s390x/appstream/os',
        'content/eus/rhel8/8.8/s390x/appstream/source/SRPMS',
        'content/eus/rhel8/8.8/x86_64/appstream/debug',
        'content/eus/rhel8/8.8/x86_64/appstream/os',
        'content/eus/rhel8/8.8/x86_64/appstream/source/SRPMS',
        'content/tus/rhel8/8.8/x86_64/appstream/debug',
        'content/tus/rhel8/8.8/x86_64/appstream/os',
        'content/tus/rhel8/8.8/x86_64/appstream/source/SRPMS'
      ],
      'pkgs': [
        {'reference':'pg_repack-1.4.8-1.module+el8.8.0+17071+aaaceaa4', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'pgaudit-1.7.0-1.module+el8.8.0+17071+aaaceaa4', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgres-decoderbufs-1.9.7-1.Final.module+el8.8.0+17071+aaaceaa4', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-contrib-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-docs-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-plperl-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-plpython3-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-pltcl-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-private-devel-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-private-libs-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-server-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-server-devel-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-static-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-test-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-test-rpm-macros-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-upgrade-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'postgresql-upgrade-devel-15.5-1.module+el8.8.0+20658+5fb3eedd', 'sp':'8', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
      ]
    }
  ]
};

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:appstreams, appstreams:TRUE);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

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 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 module_array ( appstreams[module] ) {
      var repo_relative_urls = NULL;
      if (!empty_or_null(module_array['repo_relative_urls'])) repo_relative_urls = module_array['repo_relative_urls'];
      foreach var package_array ( module_array['pkgs'] ) {
        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;
        var exists_check = NULL;
        var cves = NULL;
        if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
        if (!empty_or_null(package_array['release'])) _release = 'RHEL' + 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 (!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 &&
            _release &&
            rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
            (applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
            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, cves:cves)) flag++;
      }
    }
  }
}

if (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module postgresql:15');

if (flag)
{
  var subscription_caveat = '\n' +
    'NOTE: This vulnerability check contains fixes that apply to\n' +
    'packages only available in the Red Hat Enterprise Linux\n' +
    'Extended Update Support repository.\n' +
    'Access to this repository requires a paid RHEL subscription.\n';
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();
  else extra = subscription_caveat + rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : extra
  );
  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 / postgresql / etc');
}
VendorProductVersionCPE
redhatrhel_eus8.8cpe:/o:redhat:rhel_eus:8.8
redhatenterprise_linuxpg_repackp-cpe:/a:redhat:enterprise_linux:pg_repack
redhatenterprise_linuxpgauditp-cpe:/a:redhat:enterprise_linux:pgaudit
redhatenterprise_linuxpostgres-decoderbufsp-cpe:/a:redhat:enterprise_linux:postgres-decoderbufs
redhatenterprise_linuxpostgresqlp-cpe:/a:redhat:enterprise_linux:postgresql
redhatenterprise_linuxpostgresql-contribp-cpe:/a:redhat:enterprise_linux:postgresql-contrib
redhatenterprise_linuxpostgresql-docsp-cpe:/a:redhat:enterprise_linux:postgresql-docs
redhatenterprise_linuxpostgresql-plperlp-cpe:/a:redhat:enterprise_linux:postgresql-plperl
redhatenterprise_linuxpostgresql-plpython3p-cpe:/a:redhat:enterprise_linux:postgresql-plpython3
redhatenterprise_linuxpostgresql-pltclp-cpe:/a:redhat:enterprise_linux:postgresql-pltcl
Rows per page:
1-10 of 191

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.7 High

AI Score

Confidence

Low

0.015 Low

EPSS

Percentile

86.7%