Vulnerabilities > CVE-2019-4386 - Exposed Dangerous Method or Function vulnerability in IBM DB2

047910
CVSS 6.5 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
ibm
CWE-749
nessus

Summary

IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.1 could allow an authenticated user to execute a function that would cause the server to crash. IBM X-Force ID: 162714.

Vulnerable Configurations

Part Description Count
Application
Ibm
5
OS
Ibm
1
OS
Linux
1
OS
Microsoft
1
OS
Oracle
1

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyDatabases
    NASL idDB2_1114FP4A_NIX.NASL
    descriptionAccording to its version, the installation of IBM DB2 running on the remote host is either 9.7 prior to Fix Pack 11 Special Build 38744, 10.1 prior to Fix Pack 6 Special Build 38745, 10.5 prior to Fix Pack 10 Special Build 38746, or 11.1 prior to Mod 4 Fix Pack 5. It is, therefore, affected by a local privilege escalation vulnerability due to multiple buffer overflow vulnerabilities in DB2.
    last seen2020-03-17
    modified2019-07-12
    plugin id126635
    published2019-07-12
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/126635
    titleIBM DB2 9.7 < FP11 Special Build 38744 / 10.1 < FP6 Special Build 38745 / 10.5 < FP10 Special Build 38746 / 11.1 < M4FP5 Buffer Overflow Vulnerability (UNIX)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    include('compat.inc');
    
    if (description)
    {
      script_id(126635);
      script_version("1.4");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/28");
    
      script_cve_id(
        "CVE-2019-4014",
        "CVE-2019-4101",
        "CVE-2019-4102",
        "CVE-2019-4154",
        "CVE-2019-4322",
        "CVE-2019-4386"
      );
      script_bugtraq_id(
        107686,
        109002,
        109019,
        109021,
        109024,
        109026
      );
    
      script_name(english:"IBM DB2 9.7 < FP11 Special Build 38744 / 10.1 < FP6 Special Build 38745 / 10.5 < FP10 Special Build 38746 / 11.1 < M4FP5 Buffer Overflow Vulnerability (UNIX)");
    
      script_set_attribute(attribute:"synopsis", value:
    "The remote database server is affected by a local privilege escalation vulnerability.");
      script_set_attribute(attribute:"description", value:
    "According to its version, the installation of IBM DB2 running on the remote host is either 9.7 prior to Fix Pack 11 
    Special Build 38744, 10.1 prior to Fix Pack 6 Special Build 38745, 10.5 prior to Fix Pack 10 Special Build 38746, or 
    11.1 prior to Mod 4 Fix Pack 5. It is, therefore, affected by a local privilege escalation vulnerability due to 
    multiple buffer overflow vulnerabilities in DB2.");
      # https://www-01.ibm.com/support/docview.wss?uid=ibm10884444
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?08deaf85");
      # https://www-01.ibm.com/support/docview.wss?uid=ibm10878793
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2d40f485");
      # https://www.ibm.com/support/docview.wss?uid=ibm10880741
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6dbf8ac9");
      # https://www.ibm.com/support/docview.wss?uid=ibm10880743
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?88af628b");
      # https://www.ibm.com/support/docview.wss?uid=ibm10880737
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f540ba24");
      # https://www.ibm.com/support/docview.wss?uid=ibm10886809
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b6f97008");
      script_set_attribute(attribute:"solution", value:"Apply the appropriate IBM DB2 Fix Pack or Special Build based on 
      the most recent fix pack level for your branch.");
      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:L/AC:L/PR:L/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:"cvss_score_source", value:"CVE-2019-4014");
    
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/27");
      script_set_attribute(attribute:"patch_publication_date", value:"2019/06/27");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/12");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      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) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("db2_installed.nbin");
      script_require_keys("installed_sw/DB2 Server");
      script_exclude_keys("SMB/db2/Installed");
    
      exit(0);
    }
    
    include('audit.inc');
    include('db2_report_func.inc');
    include('global_settings.inc');
    include('install_func.inc');
    include('misc_func.inc');
    
    # The remote host's OS is Windows, not Linux.
    if (get_kb_item('SMB/db2/Installed'))
      audit(AUDIT_OS_NOT, 'Linux', 'Windows');
    
    app = 'DB2 Server';
    install = get_single_install(app_name:app, exit_if_unknown_ver:TRUE);
    port = install['port'];
    
    if (!port)
      port = 0;
    
    # DB2 has an optional OpenSSH server that will run on windows. 
    # We need to exit out if we picked up the windows installation that way.
    if ('Windows' >< install['platform'])
      audit(AUDIT_HOST_NOT, 'a Linux based operating system');
    
    version = kb_version = install['version'];
    path = install['path'];
    special_build = install['special_build'];
    
    if(empty_or_null(special_build))
      special_build = 'None';
    
    if(special_build != 'None')
      kb_version += ' with Special Build ' + special_build;
    
    fix_ver = NULL;
    fix_build = NULL;
    
    if (version =~ '^9\\.7\\.')
    {
      fix_ver = '9.7.0.11';
      fix_build = '38744';
    }
    else if (version =~ '^10\\.1\\.')
    {
      fix_ver = '10.1.0.6';
      fix_build = '38745';
    }
    else if (version =~ '^10\\.5\\.')
    {
      fix_ver = '10.5.0.10';
      fix_build = '38746';
    }
    else if (version =~ '^11\\.1\\.')
    {
      fix_ver = '11.1.4.5';
    }
    else
      audit(AUDIT_INST_PATH_NOT_VULN, app, kb_version, path);
    
    vuln = FALSE;
    cmp = ver_compare(ver:version, fix:fix_ver, strict:FALSE);
    
    # less than current fix pack                                      
    if (cmp < 0)
    {
      vuln = TRUE;
    }
    else if (cmp == 0 && !isnull(fix_build))
    {
      # missing special build or less than current special build      
      if (special_build == 'None' || ver_compare(ver:special_build, fix:fix_build, strict:FALSE) < 0)
        vuln = TRUE;
    }
    
    if (!vuln)
      audit(AUDIT_INST_PATH_NOT_VULN, app, kb_version, path);
    
    report_db2(
      severity          : SECURITY_HOLE,
      port              : port,
      product           : app,
      path              : path,
      installed_version : version,
      fixed_version     : fix_ver,
      special_installed : special_build,
      special_fix       : fix_build
    );
    
  • NASL familyWindows
    NASL idDB2_1114FP4A_WIN.NASL
    descriptionAccording to its version, the installation of IBM DB2 running on the remote host is either 9.7 prior to Fix Pack 11 Special Build 38744, 10.1 prior to Fix Pack 6 Special Build 38745, 10.5 prior to Fix Pack 10 Special Build 38746, or 11.1 prior to 11.1.4 Fix Pack 4a Special Build 38747. It is, therefore, affected by a local privilege escalation vulnerability due to multiple buffer overflow vulnerabilities in DB2.
    last seen2020-03-17
    modified2019-07-12
    plugin id126636
    published2019-07-12
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/126636
    titleIBM DB2 9.7 < FP11 Special Build 38744 / 10.1 < FP6 Special Build 38745 / 10.5 < FP10 Special Build 38746 / 11.1.4 < FP4a Special Build 38747 Buffer Overflow Vulnerability (Windows)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(126636);
      script_version("1.4");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/28");
    
      script_cve_id(
        "CVE-2019-4014",
        "CVE-2019-4101",
        "CVE-2019-4102",
        "CVE-2019-4154",
        "CVE-2019-4322",
        "CVE-2019-4386"
      );
      script_bugtraq_id(
        107686,
        109002,
        109019,
        109021,
        109024,
        109026
      );
    
      script_name(english:"IBM DB2 9.7 < FP11 Special Build 38744 / 10.1 < FP6 Special Build 38745 / 10.5 < FP10 Special Build 38746 / 11.1.4 < FP4a Special Build 38747 Buffer Overflow Vulnerability (Windows)");
      script_summary(english:"Checks the DB2 signature.");
    
      script_set_attribute(attribute:"synopsis", value:
    "The remote database server is affected by a local privilege escalation vulnerability.");
      script_set_attribute(attribute:"description", value:
    "According to its version, the installation of IBM DB2 running on the remote host is either
    9.7 prior to Fix Pack 11 Special Build 38744, 10.1 prior to Fix Pack 6 Special Build 38745, 10.5 prior
    to Fix Pack 10 Special Build 38746, or 11.1 prior to 11.1.4 Fix Pack 4a Special Build 38747. It is, 
    therefore, affected by a local privilege escalation vulnerability due to multiple buffer overflow 
    vulnerabilities in DB2.");
      # https://www-01.ibm.com/support/docview.wss?uid=ibm10884444
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?08deaf85");
      # https://www-01.ibm.com/support/docview.wss?uid=ibm10878793
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2d40f485");
      # https://www.ibm.com/support/docview.wss?uid=ibm10880741
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6dbf8ac9");
      # https://www.ibm.com/support/docview.wss?uid=ibm10880743
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?88af628b");
      # https://www.ibm.com/support/docview.wss?uid=ibm10880737
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f540ba24");
      # https://www.ibm.com/support/docview.wss?uid=ibm10886809
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b6f97008");
      # https://www.ibm.com/blogs/psirt/ibm-security-bulletin-multiple-buffer-overflow-vulnerabilities-exist-in-ibm-db2-leading-to-privilege-escalation-cve-2019-4322/
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4540cf8f");
      script_set_attribute(attribute:"solution", value:
    "Apply the appropriate IBM DB2 Fix Pack or Special Build based on the
    most recent fix pack level for your branch.");
      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:L/AC:L/PR:L/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:"cvss_score_source", value:"CVE-2019-4014");
    
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/27");
      script_set_attribute(attribute:"patch_publication_date", value:"2019/06/27");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/12");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:db2");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"Windows");
    
      script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("db2_and_db2_connect_installed.nbin");
      script_require_keys("SMB/db2/Installed");
    
      exit(0);
    }
    
    include('audit.inc');
    include('global_settings.inc');
    include('install_func.inc');
    include('misc_func.inc');
    include('db2_report_func.inc');
    
    app = 'DB2 Server';
    
    # linux uses register_install, so we need to check this KB item
    if(!get_kb_item('SMB/db2/Installed')) audit(AUDIT_NOT_INST, app);
    
    install = get_single_install(app_name:app, exit_if_unknown_ver:TRUE);
    version = report_version = install['version'];
    
    special_build = install['special_build'];
    if (empty_or_null(special_build)) special_build = 'None';
    if (special_build != 'None') report_version += ' with Special Build ' + special_build;
    
    path = install['path'];
    
    fix_ver = NULL;
    fix_build = NULL;
    
    if (version =~ '^9\\.7\\.')
    {
      fix_ver = '9.7.1100.352';
      fix_build = '38744';
    }
    else if (version =~ '^10\\.1\\.')
    {
      fix_ver = '10.1.600.580';
      fix_build = '38745';
    }
    else if (version =~ '^10\\.5\\.')
    {
      fix_ver = '10.5.1000.898';
      fix_build = '38746';
    }
    else if (version =~ '^11\\.1\\.')
    {
      fix_ver = '11.1.4041.600';
      fix_build = '38747';
    }
    else
      audit(AUDIT_INST_PATH_NOT_VULN, app, report_version, path);
    
    vuln = FALSE;
    cmp = ver_compare(ver:version, fix:fix_ver, strict:FALSE);
    # less than current fix pack
    if (cmp < 0)
      vuln = TRUE;
    else if (cmp == 0 && !isnull(fix_build))
    {
      # missing special build or less than current special build      
      if (special_build == 'None' || ver_compare(ver:special_build, fix:fix_build, strict:FALSE) < 0)
        vuln = TRUE;
    }
    
    if (!vuln)
      audit(AUDIT_INST_PATH_NOT_VULN, app, report_version, path);
    
    port = get_kb_item('SMB/transport');
    if (!port) port = 445;
    
    report_db2(
        severity          : SECURITY_HOLE,
        port              : port,
        product           : app,
        path              : path,
        installed_version : version,
        fixed_version     : fix_ver,
        special_installed : special_build,
        special_fix       : fix_build);