Vulnerabilities > CVE-2007-1228 - Improper Authentication vulnerability in IBM DB2 8.2/9.0

047910
CVSS 4.4 - MEDIUM
Attack vector
LOCAL
Attack complexity
MEDIUM
Privileges required
SINGLE
Confidentiality impact
COMPLETE
Integrity impact
NONE
Availability impact
NONE
local
ibm
unix
CWE-287
nessus
NVD
Published: 2007-03-02
Updated: 2009-02-11

Summary

IBM DB2 UDB 8.2 before Fixpak 7 (aka fixpack 14), and DB2 9 before Fix Pack 2, on UNIX allows the "fenced" user to access certain unauthorized directories.

Vulnerable Configurations

Part Description Count
Application
Ibm
9
OS
Unix
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Authentication Abuse
    An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker. This attack may exploit assumptions made by the target's authentication procedures, such as assumptions regarding trust relationships or assumptions regarding the generation of secret values. This attack differs from Authentication Bypass attacks in that Authentication Abuse allows the attacker to be certified as a valid user through illegitimate means, while Authentication Bypass allows the user to access protected material without ever being certified as an authenticated user. This attack does not rely on prior sessions established by successfully authenticating users, as relied upon for the "Exploitation of Session Variables, Resource IDs and other Trusted Credentials" attack patterns.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Utilizing REST's Trust in the System Resource to Register Man in the Middle
    This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to place man in the middle once SSL is terminated. Rest applications premise is that they leverage existing infrastructure to deliver web services functionality. An example of this is a Rest application that uses HTTP Get methods and receives a HTTP response with an XML document. These Rest style web services are deployed on existing infrastructure such as Apache and IIS web servers with no SOAP stack required. Unfortunately from a security standpoint, there frequently is no interoperable identity security mechanism deployed, so Rest developers often fall back to SSL to deliver security. In large data centers, SSL is typically terminated at the edge of the network - at the firewall, load balancer, or router. Once the SSL is terminated the HTTP request is in the clear (unless developers have hashed or encrypted the values, but this is rare). The attacker can utilize a sniffer such as Wireshark to snapshot the credentials, such as username and password that are passed in the clear once SSL is terminated. Once the attacker gathers these credentials, they can submit requests to the web service provider just as authorized user do. There is not typically an authentication on the client side, beyond what is passed in the request itself so once this is compromised, then this is generally sufficient to compromise the service's authentication scheme.
  • Man in the Middle Attack
    This type of attack targets the communication between two components (typically client and server). The attacker places himself in the communication channel between the two components. Whenever one component attempts to communicate with the other (data flow, authentication challenges, etc.), the data first goes to the attacker, who has the opportunity to observe or alter it, and it is then passed on to the other component as if it was never intercepted. This interposition is transparent leaving the two compromised components unaware of the potential corruption or leakage of their communications. The potential for Man-in-the-Middle attacks yields an implicit lack of trust in communication or identify between two components.

Nessus

  • NASL familyDatabases
    NASL idDB2_81FP14.NASL
    descriptionAccording to its version, the installation of IBM DB2 running on the remote host may crash when processing specially crafted SQLJRA packets because it attempts to dereference a NULL pointer in the sqle_db2ra_as_recvrequest() function. A remote attacker can send such packets without authentication to deny service to legitimate users of the application. In addition, the fenced userid may be able to access directories without proper authorization.
    last seen2020-06-01
    modified2020-06-02
    plugin id23937
    published2006-12-23
    reporterThis script is Copyright (C) 2006-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/23937
    titleIBM DB2 < 8.1 Fix Pack 14 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(23937);
  script_version("1.24");
  script_cvs_date("Date: 2018/11/15 20:50:21");

  script_cve_id("CVE-2006-6638", "CVE-2007-1228");
  script_bugtraq_id(21646, 22729);

  script_name(english:"IBM DB2 < 8.1 Fix Pack 14 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 running on the
remote host may crash when processing specially crafted SQLJRA packets
because it attempts to dereference a NULL pointer in the
sqle_db2ra_as_recvrequest() function. A remote attacker can send such
packets without authentication to deny service to legitimate users of
the application. 

In addition, the fenced userid may be able to access directories
without proper authorization." );
  script_set_attribute(attribute:"see_also", value:"https://www.trustwave.com/Company/AppSecInc-is-now-Trustwave/" );
  script_set_attribute(attribute:"see_also", value:"http://www-1.ibm.com/support/docview.wss?uid=swg24014043" );
  script_set_attribute(attribute:"see_also", value:"http://www-1.ibm.com/support/docview.wss?uid=swg1IY86711" );
  script_set_attribute(attribute:"solution", value:
"Apply IBM DB2 UDB Version 8.1 Fix Pack 14 or later." );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:N/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_cwe_id(287);
  script_set_attribute(attribute:"plugin_publication_date", value: "2006/12/23");
  script_set_attribute(attribute:"vuln_publication_date", value: "2006/07/06");
  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) 2006-2018 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");
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 = '8.1.13.271';
  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
if (platform == 18)
{
  if (level =~ '^8\\.1\\.0\\.') fixed_level = '8.1.0.128';
  else fixed_level = '8.1.2.128';

  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_WARNING,
      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.");
  • NASL familyDatabases
    NASL idDB2_9FP2.NASL
    descriptionAccording to its version, the installation of IBM DB2 running on the remote host allows unsafe access to several setuid-root binaries. A local attacker can exploit this to crash the affected database server or possibly even gain root-level access. In addition, the fenced userid may be able to access directories without proper authorization.
    last seen2020-06-01
    modified2020-06-02
    plugin id24699
    published2007-02-23
    reporterThis script is Copyright (C) 2007-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/24699
    titleIBM DB2 < 9 Fix Pack 2 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(24699);
  script_version("1.26");
  script_cvs_date("Date: 2018/11/15 20:50:21");

  script_cve_id("CVE-2007-1086", "CVE-2007-1087", "CVE-2007-1088", "CVE-2007-1228");
  script_bugtraq_id(22677, 22729);

  script_name(english:"IBM DB2 < 9 Fix Pack 2 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 running on the
remote host allows unsafe access to several setuid-root binaries. A
local attacker can exploit this to crash the affected database server
or possibly even gain root-level access. 

In addition, the fenced userid may be able to access directories
without proper authorization.");
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c3852717");
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3f1c047c");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2007/Feb/520");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2007/Feb/522");
  script_set_attribute(attribute:"see_also", value:"http://www-1.ibm.com/support/docview.wss?uid=swg21255745");
  script_set_attribute(attribute:"see_also", value:"http://www-1.ibm.com/support/docview.wss?uid=swg21255747");
  script_set_attribute(attribute:"see_also", value:"http://www-1.ibm.com/support/docview.wss?uid=swg1IY86711");
  script_set_attribute(attribute:"solution", value:"Apply DB2 Version 9 Fix Pack 2 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/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(287);
  script_set_attribute(attribute:"plugin_publication_date", value: "2007/02/23");
  script_set_attribute(attribute:"vuln_publication_date", value: "2006/07/06");
  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) 2007-2018 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/64-bit
if (platform == 5 || platform == 23)
{
  fixed_level = '9.1.100.129';
  if (ver_compare(ver:level, fix:fixed_level) == -1)
    vuln = TRUE;
}
# Linu, 2.6 Kernel 32/64-bit
else if (platform == 18 || platform == 30)
{
  fixed_level = '9.1.0.2';
  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);
}
exit(0, "IBM DB2 "+level+" on " + report_phrase + " is listening on port "+port+" and is not affected.");

References