CentOS 7 : postgresql (CESA-2017:1983)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2017:1983 and 
# CentOS Errata and Security Advisory 2017:1983 respectively.
#

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

if (description)
{
  script_id(102747);
  script_version("3.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2017-7484", "CVE-2017-7486");
  script_xref(name:"RHSA", value:"2017:1983");

  script_name(english:"CentOS 7 : postgresql (CESA-2017:1983)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An update for postgresql is now available for Red Hat Enterprise Linux
7.

Red Hat Product Security has rated this update as having a security
impact of Moderate. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

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

The following packages have been upgraded to a later upstream version:
postgresql (9.2.21). (BZ#1449706)

Security Fix(es) :

* It was found that some selectivity estimation functions did not
check user privileges before providing information from pg_statistic,
possibly leaking information. A non-administrative database user could
use this flaw to steal some information from tables they are otherwise
not allowed to access. (CVE-2017-7484)

* It was found that the pg_user_mappings view could disclose
information about user mappings to a foreign database to
non-administrative database users. A database user with USAGE
privilege for this mapping could, when querying the view, obtain user
mapping data, such as the username and password used to connect to the
foreign database. (CVE-2017-7486)

Red Hat would like to thank the PostgreSQL project for reporting these
issues. Upstream acknowledges Robert Haas as the original reporter of
CVE-2017-7484; and Andrew Wheelwright as the original reporter of
CVE-2017-7486.

Additional Changes :

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.4 Release Notes linked from the References section."
  );
  # https://lists.centos.org/pipermail/centos-cr-announce/2017-August/004454.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b8cccbdd"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected postgresql packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/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:N/UI:N/S:U/C:H/I:N/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-2017-7484");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-contrib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-plperl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-plpython");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-pltcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:postgresql-upgrade");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/05/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/08/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/08/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-contrib-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-devel-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-docs-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-libs-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-plperl-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-plpython-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-pltcl-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-server-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-static-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-test-9.2.21-1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"postgresql-upgrade-9.2.21-1.el7")) flag++;


if (flag)
{
  cr_plugin_caveat = '\n' +
    'NOTE: The security advisory associated with this vulnerability has a\n' +
    'fixed package version that may only be available in the continuous\n' +
    'release (CR) repository for CentOS, until it is present in the next\n' +
    'point release of CentOS.\n\n' +

    'If an equal or higher package level does not exist in the baseline\n' +
    'repository for your major version of CentOS, then updates from the CR\n' +
    'repository will need to be applied in order to address the\n' +
    'vulnerability.\n';
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get() + cr_plugin_caveat
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "postgresql / postgresql-contrib / postgresql-devel / etc");
}