RHEL 6 / 7 : rh-postgresql95-postgresql (RHSA-2017:2677)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2017:2677. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(210267);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/11/05");

  script_cve_id("CVE-2017-7546", "CVE-2017-7547", "CVE-2017-7548");
  script_xref(name:"RHSA", value:"2017:2677");

  script_name(english:"RHEL 6 / 7 : rh-postgresql95-postgresql (RHSA-2017:2677)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for rh-postgresql95-postgresql.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2017:2677 advisory.

    PostgreSQL is an advanced object-relational database management system (DBMS).

    The following packages have been upgraded to a later upstream version: rh-postgresql95-postgresql (9.5.9).
    (BZ#1484637, BZ#1484642, BZ#1484648)

    Security Fix(es):

    * 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)

    Red Hat 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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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://access.redhat.com/security/updates/classification/#moderate");
  script_set_attribute(attribute:"see_also", value:"https://www.postgresql.org/about/news/1772/");
  script_set_attribute(attribute:"see_also", value:"https://www.postgresql.org/docs/current/static/release-9-5-8.html");
  script_set_attribute(attribute:"see_also", value:"https://www.postgresql.org/docs/current/static/release-9-5-9.html");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1477184");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1477185");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1477187");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2017/rhsa-2017_2677.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?223f8569");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2017:2677");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL rh-postgresql95-postgresql package based on the guidance in RHSA-2017:2677.");
  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_cwe_id(287, 522, 862);
  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:"2017/09/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/11/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql-contrib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql-plperl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql-plpython");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql-pltcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-postgresql95-postgresql-test");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  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_list(operator: 'ge', os_version: os_ver, rhel_versions: ['6','7'])) audit(AUDIT_OS_NOT, 'Red Hat 6.x / 7.x', '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 constraints = [
  {
    'repo_relative_urls': [
      'content/dist/rhel/server/6/6Server/x86_64/rhscl/1/debug',
      'content/dist/rhel/server/6/6Server/x86_64/rhscl/1/os',
      'content/dist/rhel/server/6/6Server/x86_64/rhscl/1/source/SRPMS',
      'content/dist/rhel/workstation/6/6Workstation/x86_64/rhscl/1/debug',
      'content/dist/rhel/workstation/6/6Workstation/x86_64/rhscl/1/os',
      'content/dist/rhel/workstation/6/6Workstation/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.2/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.2/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.2/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.3/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.3/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.3/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.4/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.4/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.4/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.5/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.5/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.5/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.6/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.6/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.6/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.7/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.7/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.7/x86_64/rhscl/1/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'rh-postgresql95-postgresql-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-contrib-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-devel-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-docs-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-libs-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-plperl-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-plpython-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-pltcl-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-server-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-static-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-test-9.5.9-1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'repo_relative_urls': [
      'content/dist/rhel/server/7/7Server/x86_64/rhscl/1/debug',
      'content/dist/rhel/server/7/7Server/x86_64/rhscl/1/os',
      'content/dist/rhel/server/7/7Server/x86_64/rhscl/1/source/SRPMS',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/rhscl/1/debug',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/rhscl/1/os',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.1/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.1/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.1/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.2/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.2/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.2/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.3/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.3/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.3/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.4/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.4/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.4/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.5/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.5/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.5/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.6/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.6/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.6/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.7/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.7/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.7/x86_64/rhscl/1/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'rh-postgresql95-postgresql-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-contrib-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-devel-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-docs-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-libs-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-plperl-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-plpython-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-pltcl-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-server-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-static-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'rh-postgresql95-postgresql-test-9.5.9-1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

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

var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
  foreach var pkg ( constraint_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(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    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 &&
        _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 (flag)
{
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = 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, 'rh-postgresql95-postgresql / rh-postgresql95-postgresql-contrib / etc');
}