Vulnerabilities > CVE-2008-3960 - Improper Input Validation vulnerability in IBM DB2 Universal Database 8.2

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
low complexity
ibm
CWE-20
nessus

Summary

Unspecified vulnerability in the JDBC Applet Server Service (aka db2jds) in IBM DB2 UDB 8 before Fixpak 17 allows remote attackers to cause a denial of service (service crash) via "malicious packets."

Vulnerable Configurations

Part Description Count
Application
Ibm
17

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

NASL familyDatabases
NASL idDB2_8FP17.NASL
descriptionAccording to its version, the installation of IBM DB2 8 running on the remote host is affected by multiple issues : - By sending malicious DB2 UDB v7 client CONNECT/DETACH requests it may be possible to crash the remote DB2 server. (IZ08134) - Failure to switch the owner of the
last seen2020-06-01
modified2020-06-02
plugin id34195
published2008-09-12
reporterThis script is Copyright (C) 2008-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/34195
titleIBM DB2 8 < Fix Pack 17 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(34195);
  script_version("1.21");
  script_cvs_date("Date: 2018/07/06 11:26:06");

  script_cve_id(
    "CVE-2008-2154",
    "CVE-2008-3856",
    "CVE-2008-3958",
    "CVE-2008-3960",
    "CVE-2008-6820",
    "CVE-2008-6821"
  );
  script_bugtraq_id(31058, 35408, 35409);
  script_xref(name:"Secunia", value:"31787");

  script_name(english:"IBM DB2 8 < Fix Pack 17 Multiple Vulnerabilities");
  script_summary(english:"Checks DB2 signature.");

  script_set_attribute(attribute:"synopsis", value:
"The remote database server is affected by multiple issues." );
  script_set_attribute(attribute:"description", value:
"According to its version, the installation of IBM DB2 8 running on the
remote host is affected by multiple issues :

  - By sending malicious DB2 UDB v7 client CONNECT/DETACH
    requests it may be possible to crash the remote DB2 
    server. (IZ08134)

  - Failure to switch the owner of the 'DB2FMP' process
    may lead to a security vulnerability on Unix / Linux
    platforms. (IZ20350)

  - DAS server code is affected by a buffer overflow 
    vulnerability. (IZ22004)

  - Using INSTALL_JAR, it may be possible to create and 
    overwrite critical files on the system. (IZ22142)

  - DB2 does not mark inoperative or drop views and triggers
    if the definer cannot maintain the objects. (IZ22287)

  - By sending malicious packets to 'DB2JDS', it may be 
    possible to crash the remote DB2 server. (JR29274)

  - While running on Windows 'DB2FMP' runs with OS
    privileges. (JR30228)" );
  script_set_attribute(attribute:"see_also", value:"http://www-1.ibm.com/support/docview.wss?uid=swg21255352" );
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg1IZ08134" );
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg1IZ20350" );
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg1IZ22004" );
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg1IZ22142" );
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg1IZ22287" );
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg1JR29274" );
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg1JR30228" );
  script_set_attribute(attribute:"solution", value:
"Apply IBM DB2 UDB version 8 Fix Pack 17 or later." );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(16, 20, 119, 264);

  script_set_attribute(attribute:"plugin_publication_date", value: "2008/09/12");
  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 !~ '^8\\.1\\.') exit(0, "The version of IBM DB2 listening on port "+port+" is not 8.1 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;
report = "";

# Windows 32-bit
if (platform == 5)
{
  fixed_level = '8.1.17.644';
  if (ver_compare(ver:level, fix:fixed_level) == -1)
    report = 
      '\n  Platform        : ' + platform_name +
      '\n  Installed level : ' + level +
      '\n  Fixed level     : ' + fixed_level + '\n';
}
# Linux, 2.6 Kernel 32-bit
else if (platform == 18)
{
  if (level =~ '^8\\.1\\.0\\.') fixed_level = '8.1.0.152';
  else fixed_level = '8.1.2.152';

  if (ver_compare(ver:level, fix:fixed_level) == -1)
    report =
      '\n  Platform        : ' + platform_name +
      '\n  Installed level : ' + level +
      '\n  Fixed level     : ' + fixed_level + '\n';
}
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 (report)
{
  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.");