Vulnerabilities > CVE-2007-4423 - Buffer Errors vulnerability in IBM DB2 Universal Database 8.0/9.0/9.1

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-119
nessus

Summary

Stack-based buffer overflow in the AUTH_LIST_GROUPS_FOR_AUTHID function in IBM DB2 UDB 9.1 before Fixpak 3 allows attackers to cause a denial of service and possibly execute arbitrary code via a long argument.

Vulnerable Configurations

Part Description Count
Application
Ibm
3

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.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

NASL familyDatabases
NASL idDB2_9FP3.NASL
descriptionAccording to its version, the installation of IBM DB2 running on the remote host is affected by one or more of the following issues : - A local user may be able to overwrite arbitrary files, create arbitrary world-writeable directories, or gain root privileges via symlink attacks or specially crafted environment variables. (IY98210 / IY99261) - A user may be able to continue to execute a method even once privileges for the method have been revoked. (IY88226, version 8 only) - There is an unspecified issue allowing for privilege elevation when DB2
last seen2020-06-01
modified2020-06-02
plugin id25905
published2007-08-20
reporterThis script is Copyright (C) 2007-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/25905
titleIBM DB2 < 9 Fix Pack 3 / 8 Fix Pack 15 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(25905);
  script_version("1.34");
  script_cvs_date("Date: 2018/11/15 20:50:21");

  script_cve_id("CVE-2007-2582", "CVE-2007-4270", "CVE-2007-4271", "CVE-2007-4272",
  "CVE-2007-4273", "CVE-2007-4275", "CVE-2007-4276", "CVE-2007-4417", "CVE-2007-4418", "CVE-2007-4423");
  script_bugtraq_id(23890, 25339, 26010);

  script_name(english:"IBM DB2 < 9 Fix Pack 3 / 8 Fix Pack 15 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 is affected by one or more of the following issues :

  - A local user may be able to overwrite arbitrary files,
    create arbitrary world-writeable directories, or gain
    root  privileges via symlink attacks or specially
    crafted  environment variables. (IY98210 / IY99261)

  - A user may be able to continue to execute a method even 
    once privileges for the method have been revoked.
    (IY88226,  version 8 only)

  - There is an unspecified issue allowing for privilege
    elevation when DB2 'execs' executables while running as 
    root. (IY98206 / IY98176)

  - There is an unspecified vulnerability related to
    incorrect authorization routines. (JR25940, version 8
    only)

  - There is an unspecified vulnerability in 
    'AUTH_LIST_GROUPS_FOR_AUTHID'. (IZ01828, version 9.1 
    only)

  - There is an unspecified vulnerability in the 'db2licm'
    and 'db2pd' tools. (IY97922 / IY97936)

  - There is an unspecified vulnerability involving
    'db2licd' and the 'OSSEMEMDBG' and 'TRC_LOG_FILE'
    environment variables. (IY98011 / IY98101)

  - There is a buffer overflow involving the 'DASPROF'
    environment variable. (IY97346 / IY99311)

  - There is an unspecified vulnerability that can arise 
    during instance and FMP startup. (IZ01923 / IZ02067)

  - The DB2JDS service may allow for arbitrary code
    execution without the need for authentication due to a
    stack overflow in an internal sprintf() call.
    (IY97750, version 8 only)

  - The DB2JDS service is affected by two denial of service
    issues that can be triggered by packets with an invalid
    LANG parameter or a long packet, which cause the process
    to terminate (version 8 only).

Note that there is currently insufficient information to determine to
what extent the first set of issues overlaps the others." );
  script_set_attribute(attribute:"see_also", value:"https://www.trustwave.com/Company/AppSecInc-is-now-Trustwave/");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2007/Aug/313");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2007/Aug/314");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2007/Aug/315");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2007/Aug/316");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2007/Aug/317");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2007/Aug/318");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2007/Aug/319");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/2007/Oct/153");
  script_set_attribute(attribute:"see_also", value:"https://www-01.ibm.com/support/docview.wss?uid=swg21255607");
  script_set_attribute(attribute:"see_also", value:"http://www-1.ibm.com/support/docview.wss?uid=swg21255352");
  script_set_attribute(attribute:"solution", value:
"Apply IBM DB2 version 9 Fix Pack 3 / 8.1 Fix Pack 15 / 8.2 Fix Pack 8
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:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');
  script_cwe_id(22, 119, 134);

  script_set_attribute(attribute:"plugin_publication_date", value: "2007/08/20");
  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]\\.' &&
  level !~ '^([0-7]\\.|8\\.[01])'
)  exit(0, "The version of IBM DB2 listening on port "+port+" is not 9.0, 9.1, or less than or equal to 8.1.x 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 x86
if (platform == 5)
{
  if (level =~ '^9\\.')
  {
    fixed_level = '9.1.300.257';
    if (ver_compare(ver:level, fix:fixed_level) == -1)
      vuln = TRUE;
  }
  else
  {
    fixed_level = '8.1.15.254';
    if (ver_compare(ver:level, fix:fixed_level) == -1)
      vuln = TRUE;
  }
}
else if (platform == 18)
{
  if (level =~ '^9\\.')
  {
    fixed_level = '9.1.0.3';
    if (ver_compare(ver:level, fix:fixed_level) == -1)
      vuln = TRUE;
  }
  else
  {
    if (level =~ '^8\\.1\\.0\\.') fixed_level = '8.1.0.136';
    else fixed_level = '8.1.2.136';

    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.");