IBM DB2 10.5 < Fix Pack 5 Multiple DoS Vulnerabilities

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

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

if (description)
{
  script_id(82824);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2014-6209", "CVE-2014-6210", "CVE-2014-8901");
  script_bugtraq_id(71729, 71730, 71734);

  script_name(english:"IBM DB2 10.5 < Fix Pack 5 Multiple DoS Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"The remote database server is affected by multiple denial of service
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its version, the IBM DB2 10.5 server running on the
remote host is affected by the following vulnerabilities :

  - A remote, authenticated attacker, using a specially
    crafted 'ALTER TABLE' statement on an identity column,
    can cause a denial of service by crashing the server.
    (CVE-2014-6209)

  - A remote, authenticated attacker, by using multiple
    'ALTER TABLE' statements that specify the same column,
    can cause a denial of service by crashing the server.
    (CVE-2014-6210)

  - An error exists in the XML library that allows a remote,
    authenticated attacker to cause denial of service via a
    crafted XML query that results in excessive CPU usage.
    (CVE-2014-8901)");
  script_set_attribute(attribute:"see_also", value:"https://www-304.ibm.com/support/docview.wss?uid=swg21690787");
  script_set_attribute(attribute:"see_also", value:"https://www-304.ibm.com/support/docview.wss?uid=swg21690891");
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21692358");
  script_set_attribute(attribute:"solution", value:
"Apply DB2 version 10.5 Fix Pack 5 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/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:L/UI:N/S:U/C:N/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/12/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/12/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/04/16");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:db2");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Databases");

  script_copyright(english:"This script is Copyright (C) 2015-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("db2_das_detect.nasl");
  script_require_ports("Services/db2das", 523);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("db2_report_func.inc");

port = get_service(svc:"db2das", default:523, exit_on_fail:TRUE);

app_name = "DB2";

level = get_kb_item_or_exit(app_name + "/" + port + "/Level");
if (level !~ "^10\.5\.")  audit(AUDIT_NOT_LISTEN, app_name + " 10.5.x", port);

platform = get_kb_item_or_exit(app_name+"/"+port+"/Platform");
platform_name = get_kb_item(app_name+"/"+port+"/Platform_Name");
if (isnull(platform_name))
{
  platform_name = platform;
  report_phrase = "platform " + platform;
}
else
  report_phrase = platform_name;

vuln = FALSE;
# Windows 32-bit/64-bit
if (platform == 5 || platform == 23)
{
  fixed_level = '10.5.500.107';
  if (ver_compare(ver:level, fix:fixed_level) == -1)
    vuln = TRUE;
}
# Others
else if (
  # Linux, 2.6 kernel 32/64-bit
  platform == 18 ||
  platform == 30 ||
  # AIX
  platform == 20
)
{
  fixed_level = '10.5.0.5';
  if (level =~ "^10\.5\.0\.([0-4]|3a)$")
    vuln = TRUE;
}
else
{
  info =
    'Nessus does not support version checks against ' + report_phrase + '.\n' +
    'To help us better identify vulnerable versions, please send the platform\n' +
    'number along with details about the platform, including the operating system\n' +
    'version, CPU architecture, and DB2 version to [email protected].\n';
  exit(1, info);
}

if (vuln)
{
  report_db2(
      severity        : SECURITY_WARNING,
      port            : port,
      platform_name   : platform_name,
      installed_level : level,
      fixed_level     : fixed_level);
}
else audit(AUDIT_LISTEN_NOT_VULN, app_name, port, level);