AlmaLinux 9.2 [TuxCare] Security Update: postgresql / postgresql-contrib / postgresql-docs / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1747432102)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(360461);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/01");

  script_cve_id(
    "CVE-2023-5868",
    "CVE-2023-5870",
    "CVE-2024-10976",
    "CVE-2024-10978"
  );
  script_xref(name:"CLSA", value:"2025:1747432102");

  script_name(english:"AlmaLinux 9.2 [TuxCare] Security Update: postgresql / postgresql-contrib / postgresql-docs / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1747432102)");

  script_set_attribute(attribute:"synopsis", value:
"The AlmaLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare
ALMALINUX9.2:CLSA-2025:1747432102 advisory.

  - A memory disclosure vulnerability was found in PostgreSQL that allows remote users to access sensitive
    information by exploiting certain aggregate function calls with 'unknown'-type arguments. Handling
    'unknown'-type values from string literals without type designation can disclose bytes, potentially
    revealing notable and confidential information. This issue exists due to excessive data output in
    aggregate function calls, enabling remote users to read some portion of system memory. (CVE-2023-5868)

  - A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers,
    including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful
    exploitation requires a non-core extension with a less-resilient background worker and would affect that
    specific background worker only. This issue may allow a remote high privileged user to launch a denial of
    service (DoS) attack. (CVE-2023-5870)

  - Incomplete tracking in PostgreSQL of tables with row security allows a reused query to view or change
    different rows from those intended. CVE-2023-2455 and CVE-2016-2193 fixed most interaction between row
    security and user ID changes. They missed cases where a subquery, WITH query, security invoker view, or
    SQL-language function references a table with a row-level security policy. This has the same consequences
    as the two earlier CVEs. That is to say, it leads to potentially incorrect policies being applied in cases
    where role-specific policies are used and a given query is planned under one role and then executed under
    other roles. This scenario can happen under security definer functions or when a common user and query is
    planned initially and then re-used across multiple SET ROLEs. Applying an incorrect policy may permit a
    user to complete otherwise-forbidden reads and modifications. This affects only databases that have used
    CREATE POLICY to define a row security policy. An attacker must tailor an attack to a particular
    application's pattern of query plan reuse, user ID changes, and role-specific row security policies.
    Versions before PostgreSQL 17.1, 16.5, 15.9, 14.14, 13.17, and 12.21 are affected. (CVE-2024-10976)

  - Incorrect privilege assignment in PostgreSQL allows a less-privileged application user to view or change
    different rows from those intended. An attack requires the application to use SET ROLE, SET SESSION
    AUTHORIZATION, or an equivalent feature. The problem arises when an application query uses parameters from
    the attacker or conveys query results to the attacker. If that query reacts to current_setting('role') or
    the current user ID, it may modify or return data as though the session had not used SET ROLE or SET
    SESSION AUTHORIZATION. The attacker does not control which incorrect user ID applies. Query text from
    less-privileged sources is not a concern here, because SET ROLE and SET SESSION AUTHORIZATION are not
    sandboxes for unvetted queries. Versions before PostgreSQL 17.1, 16.5, 15.9, 14.14, 13.17, and 12.21 are
    affected. (CVE-2024-10978)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/advisories/2025/clsa-2025_1747432102.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3062b16a");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2025:1747432102");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory ALMALINUX9.2:CLSA-2025:1747432102.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N");
  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:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-10976");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_severity", value:"Moderate");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/11/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/05/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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_info2.nasl");
  script_require_keys("Host/OS/extended-third-party", "Host/local_checks_enabled", "Host/AlmaLinux/release", "Host/AlmaLinux/rpm-list", "Host/cpu");

  exit(0);
}
include('rpm2.inc');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (empty_or_null(third_party_support) || third_party_support != 'TuxCare') exit(0, 'TuxCare support not enabled.');

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:"^9.2([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'AlmaLinux 9.2', '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 ('x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);


var constraints = [
  {
    'release': '9',
    'sp': '2',
    'pkgs': [
      {'reference':'postgresql-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-contrib-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-docs-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-plperl-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-plpython3-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-pltcl-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-private-devel-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-private-libs-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-server-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-server-devel-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-static-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-test-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-test-rpm-macros-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-upgrade-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'postgresql-upgrade-devel-13.11-1.el9_2.tuxcare.els9', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', '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_WARNING,
      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');
}