Vulnerabilities > CVE-2008-4691 - Denial-Of-Service vulnerability in IBM DB2 8.2/9.1

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(34475);
  script_version("1.16");
  script_cvs_date("Date: 2018/07/06 11:26:06");

  script_cve_id("CVE-2008-4691", "CVE-2008-4692", "CVE-2008-4693");
  script_bugtraq_id(31856);
  script_xref(name:"Secunia", value:"32368");

  script_name(english:"IBM DB2 9.1 < Fix Pack 6 Multiple Vulnerabilities");
  script_summary(english:"Checks DB2 signature.");

  script_set_attribute(attribute:"synopsis", value:
"The remote database server is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its version, the installation of IBM DB2 9.1 running on
the remote host is affected by one or more of the following issues :

  - An unspecified error in 'SQLNLS_UNPADDEDCHARLEN()' may
    lead to a segmentation fault in the DB2 server.
    (LI73364)

  - DB2 does not mark inoperative or drop views and triggers
    if the definer cannot maintain the objects. (IZ22306)

  - Password-related connection string keyword values may
    appear in trace output. (IZ23915)");
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg27013892");
  script_set_attribute(attribute:"solution", value:
"Apply IBM DB2 version 9.1 Fix Pack 6 or later.");
  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:L/I:L/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_cwe_id(200);

  script_set_attribute(attribute:"plugin_publication_date", value: "2008/10/22");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:db2");
  script_end_attributes();
 
  script_category(ACT_GATHER_INFO);
  script_family(english:"Databases");
 
  script_copyright(english:"This script is Copyright (C) 2008-2018 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("global_settings.inc");
include("misc_func.inc");
include("db2_report_func.inc");

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

level = get_kb_item_or_exit("DB2/"+port+"/Level");
if (level !~ '^9\\.[01]\\.') exit(0, "The version of IBM DB2 listening on port "+port+" is not 9.0 or 9.1 and thus is not affected.");

platform = get_kb_item_or_exit("DB2/"+port+"/Platform");
platform_name = get_kb_item("DB2/"+port+"/Platform_Name");
if (isnull(platform_name))
{
  platform_name = platform;
  report_phrase = "platform " + platform;
}
else
  report_phrase = platform_name;


vuln = FALSE;
# Windows 32-bit
if (platform == 5)
{
  fixed_level = '9.1.600.703';
  if (ver_compare(ver:level, fix:fixed_level) == -1)
    vuln = TRUE;
}
# Linux, 2.6 Kernel 32-bit
else if (platform == 18)
{
  fixed_level = '9.1.0.6';
  if (ver_compare(ver:level, fix:fixed_level) == -1)
    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_HOLE,
      port            : port,
      platform_name   : platform_name,
      installed_level : level,
      fixed_level     : fixed_level);
}
else exit(0, "IBM DB2 "+level+" on " + report_phrase + " is listening on port "+port+" and is not affected.");