MiracleLinux 7 : rh-postgresql95-postgresql-9.5.9-1.el7 (AXSA:2017-2240:02)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# Miracle Linux Security Advisory AXSA:2017-2240:02.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(290009);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/16");

  script_cve_id("CVE-2017-7546", "CVE-2017-7547", "CVE-2017-7548");

  script_name(english:"MiracleLinux 7 : rh-postgresql95-postgresql-9.5.9-1.el7 (AXSA:2017-2240:02)");

  script_set_attribute(attribute:"synopsis", value:
"The remote MiracleLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the
AXSA:2017-2240:02 advisory.

    * It was found that authenticating to a PostgreSQL database account with an
    empty password was possible despite libpq's refusal to send an empty password. A
    remote attacker could potentially use this flaw to gain access to database
    accounts with empty passwords. (CVE-2017-7546)
      * An authorization flaw was found in the way PostgreSQL handled access to the
    pg_user_mappings view on foreign servers. A remote, authenticated attacker could
    potentially use this flaw to retrieve passwords from the user mappings defined
    by the foreign server owners without actually having the privileges to do so.
    (CVE-2017-7547)
      * An authorization flaw was found in the way PostgreSQL handled large objects.
    A remote, authenticated attacker with no privileges on a large object could
    potentially use this flaw to overwrite the entire content of the object, thus
    resulting in denial of service. (CVE-2017-7548)
    Asianux would like to thank the PostgreSQL project for reporting these issues.
    Upstream acknowledges Ben de Graaff, Jelte Fennema, and Jeroen van der Ham as
    the original reporters of CVE-2017-7546; Jeff Janes as the original reporter
    of CVE-2017-7547; and Chapman Flack as the original reporter of CVE-2017-7548.
    CVE-2017-7546
    PostgreSQL versions before 9.2.22, 9.3.18, 9.4.13, 9.5.8 and 9.6.4 are
    vulnerable to incorrect authentication flaw allowing remote attackers
    to gain access to database accounts with an empty password.
    CVE-2017-7547
    PostgreSQL versions before 9.2.22, 9.3.18, 9.4.13, 9.5.8 and 9.6.4 are
    vulnerable to authorization flaw allowing remote authenticated
    attackers to retrieve passwords from the user mappings defined by the
    foreign server owners without actually having the privileges to do so.
    CVE-2017-7548
    PostgreSQL versions before 9.4.13, 9.5.8 and 9.6.4 are vulnerable to
    authorization flaw allowing remote authenticated attackers with no
    privileges on a large object to overwrite the entire contents of the
    object, resulting in a denial of service.

Tenable has extracted the preceding description block directly from the MiracleLinux 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://tsn.miraclelinux.com/en/node/8680");
  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:P");
  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:N/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-2017-7546");

  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:"2017/08/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/09/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql-contrib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql-plperl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql-plpython");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql-pltcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:rh-postgresql95-postgresql-test");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:miracle:linux:7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Miracle 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/local_checks_enabled", "Host/MiracleLinux/release", "Host/MiracleLinux/rpm-list", "Host/cpu");

  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) || 'MIRACLE LINUX' >!< os_product) audit(AUDIT_OS_NOT, 'MIRACLE LINUX');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'MIRACLE LINUX');
if (! preg(pattern:"^7([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'MiracleLinux 7.x', 'MIRACLE LINUX ' + os_version);

if (!get_kb_item('Host/MiracleLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('aarch64' >!< cpu && 'ppc' >!< cpu && 's390' >!< cpu && 'x86_64' >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'MIRACLE LINUX', cpu);

var constraints = [
  {
    'release': '7',
    'pkgs': [
      {'reference':'rh-postgresql95-postgresql-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'rh-postgresql95-postgresql-contrib-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'rh-postgresql95-postgresql-devel-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'rh-postgresql95-postgresql-docs-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'rh-postgresql95-postgresql-libs-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'rh-postgresql95-postgresql-plperl-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'rh-postgresql95-postgresql-plpython-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'rh-postgresql95-postgresql-pltcl-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'rh-postgresql95-postgresql-server-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'rh-postgresql95-postgresql-static-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'rh-postgresql95-postgresql-test-9.5.9-1.el7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'}
    ]
  }
];

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, 'rh-postgresql95-postgresql / rh-postgresql95-postgresql-contrib / etc');
}