CentOS 7 : mariadb (RHSA-2020:1100)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2020:1100 and 
# CentOS Errata and Security Advisory 2020:1100 respectively.
#

include('compat.inc');

if (description)
{
  script_id(135336);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/10/09");

  script_cve_id(
    "CVE-2019-2737",
    "CVE-2019-2739",
    "CVE-2019-2740",
    "CVE-2019-2805",
    "CVE-2020-2922",
    "CVE-2021-2007"
  );
  script_xref(name:"RHSA", value:"2020:1100");

  script_name(english:"CentOS 7 : mariadb (RHSA-2020:1100)");

  script_set_attribute(attribute:"synopsis", value:
"The remote CentOS Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the
RHSA-2020:1100 advisory.

  - Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server : Pluggable Auth).
    Supported versions that are affected are 5.6.44 and prior, 5.7.26 and prior and 8.0.16 and prior. Easily
    exploitable vulnerability allows high privileged attacker with network access via multiple protocols to
    compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to
    cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. (CVE-2019-2737)

  - Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Security: Privileges).
    Supported versions that are affected are 5.6.44 and prior, 5.7.26 and prior and 8.0.16 and prior. Easily
    exploitable vulnerability allows high privileged attacker with logon to the infrastructure where MySQL
    Server executes to compromise MySQL Server. Successful attacks of this vulnerability can result in
    unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server as well
    as unauthorized update, insert or delete access to some of MySQL Server accessible data. (CVE-2019-2739)

  - Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: XML). Supported
    versions that are affected are 5.6.44 and prior, 5.7.26 and prior and 8.0.16 and prior. Easily exploitable
    vulnerability allows low privileged attacker with network access via multiple protocols to compromise
    MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang
    or frequently repeatable crash (complete DOS) of MySQL Server. (CVE-2019-2740)

  - Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Parser). Supported
    versions that are affected are 5.6.44 and prior, 5.7.26 and prior and 8.0.16 and prior. Easily exploitable
    vulnerability allows low privileged attacker with network access via multiple protocols to compromise
    MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang
    or frequently repeatable crash (complete DOS) of MySQL Server. (CVE-2019-2805)

  - Vulnerability in the MySQL Client product of Oracle MySQL (component: C API). Supported versions that are
    affected are 5.6.47 and prior, 5.7.29 and prior and 8.0.18 and prior. Difficult to exploit vulnerability
    allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Client.
    Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL
    Client accessible data. (CVE-2020-2922)

  - Vulnerability in the MySQL Client product of Oracle MySQL (component: C API). Supported versions that are
    affected are 5.6.47 and prior, 5.7.29 and prior and 8.0.19 and prior. Difficult to exploit vulnerability
    allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Client.
    Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL
    Client accessible data. (CVE-2021-2007)

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/errata/RHSA-2020:1100");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/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-2021-2007");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2019-2739");

  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:"2019/07/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mariadb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mariadb-bench");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mariadb-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mariadb-embedded");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mariadb-embedded-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mariadb-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mariadb-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mariadb-test");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CentOS Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release');
if (isnull(os_release) || 'CentOS' >!< os_release) audit(AUDIT_OS_NOT, 'CentOS');
var os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '7')) audit(AUDIT_OS_NOT, 'CentOS 7.x', 'CentOS ' + os_ver);

if (!get_kb_item('Host/CentOS/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, 'CentOS', cpu);

var pkgs = [
    {'reference':'mariadb-5.5.65-1.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-5.5.65-1.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-bench-5.5.65-1.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-bench-5.5.65-1.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-devel-5.5.65-1.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-devel-5.5.65-1.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-embedded-5.5.65-1.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-embedded-5.5.65-1.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-embedded-devel-5.5.65-1.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-embedded-devel-5.5.65-1.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-libs-5.5.65-1.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-libs-5.5.65-1.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-server-5.5.65-1.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-server-5.5.65-1.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-test-5.5.65-1.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
    {'reference':'mariadb-test-5.5.65-1.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
];

var flag = 0;
foreach var package_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;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = 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 (reference && _release) {
    if (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)) 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, 'mariadb / mariadb-bench / mariadb-devel / etc');
}