CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
47.7%
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 40162, 10.1 prior to Fix Pack 6 Special Build 40161, 10.5 prior to Fix Pack 11 Special Build 40160, or 11.1 prior to Fix Pack 5 Special Build 40159, 11.5 prior to Mod 4 Fix Pack 0. It is, therefore, affected by one or more of the following vulnerabilities:
IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a denial of service, caused by improper handling of Secure Sockets Layer (SSL) renegotiation requests. By sending specially-crafted requests, a remote attacker could exploit this vulnerability to increase the resource usage on the system. (CVE-2020-4355)
IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a buffer overflow, caused by improper bounds checking which allows a local attacker to execute arbitrary code on the system with root privileges. (CVE-2020-4363)
IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 allows a local user to obtain sensitive information using a race condition of a symbolic link. (CVE-2020-4386, CVE-2020-4387)
IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 allows a local attacker to perform unauthorized actions on the system, caused by improper usage of shared memory.
By sending a specially-crafted request, an attacker can exploit this vulnerability to obtain sensitive information or cause a denial of service (DoS). (CVE-2020-4414)
IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 could allow an unauthenticated attacker to cause a denial of service due a hang in the execution of a terminate command. (CVE-2020-4420) Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#
# (C) Tenable Network Security, Inc.
#
include('compat.inc');
if (description)
{
script_id(138333);
script_version("1.7");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/12/04");
script_cve_id(
"CVE-2020-4355",
"CVE-2020-4363",
"CVE-2020-4386",
"CVE-2020-4387",
"CVE-2020-4414",
"CVE-2020-4420"
);
script_xref(name:"IAVB", value:"2020-B-0035-S");
script_xref(name:"IAVB", value:"2020-B-0043-S");
script_name(english:"IBM DB2 9.7 < FP11 40162 / 10.1 < FP6 40161 / 10.5 < FP11 40160 / 11.1 < FP5 40159 / 11.5 < Mod 4 FP0 Multiple Vulnerabilities (Windows)");
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 either 9.7 prior to Fix Pack 11
Special Build 40162, 10.1 prior to Fix Pack 6 Special Build 40161, 10.5 prior to Fix Pack 11 Special Build 40160, or
11.1 prior to Fix Pack 5 Special Build 40159, 11.5 prior to Mod 4 Fix Pack 0. It is, therefore,
affected by one or more of the following vulnerabilities:
- IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is
vulnerable to a denial of service, caused by improper handling of Secure Sockets Layer (SSL) renegotiation
requests. By sending specially-crafted requests, a remote attacker could exploit this vulnerability to
increase the resource usage on the system. (CVE-2020-4355)
- IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is
vulnerable to a buffer overflow, caused by improper bounds checking which allows a local attacker to
execute arbitrary code on the system with root privileges. (CVE-2020-4363)
- IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 allows a
local user to obtain sensitive information using a race condition of a symbolic link. (CVE-2020-4386,
CVE-2020-4387)
- IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 allows a
local attacker to perform unauthorized actions on the system, caused by improper usage of shared memory.
By sending a specially-crafted request, an attacker can exploit this vulnerability to obtain sensitive
information or cause a denial of service (DoS). (CVE-2020-4414)
- IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 could
allow an unauthenticated attacker to cause a denial of service due a hang in the execution of a terminate
command. (CVE-2020-4420)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/6242342");
script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/6242332");
script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/6242336");
script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/6242350");
script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/6242356");
script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/6242362");
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-2020-4363");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/06/30");
script_set_attribute(attribute:"patch_publication_date", value:"2020/06/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:db2");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows");
script_copyright(english:"This script is Copyright (C) 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('install_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 = '40162';
}
else if (version =~ '^10\\.1\\.')
{
fix_ver = '10.1.600.580';
fix_build = '40161';
}
else if (version =~ '^10\\.5\\.')
{
fix_ver = '10.5.1100.2866';
fix_build = '40160';
}
else if (version =~ '^11\\.1\\.')
{
fix_ver = '11.1.4050.859';
fix_build = '40159';
}
else if (version =~ '^11\\.5\\.')
fix_ver = '11.5.4000.1449';
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);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-4355
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-4363
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-4386
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-4387
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-4414
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-4420
www.ibm.com/support/pages/node/6242332
www.ibm.com/support/pages/node/6242336
www.ibm.com/support/pages/node/6242342
www.ibm.com/support/pages/node/6242350
www.ibm.com/support/pages/node/6242356
www.ibm.com/support/pages/node/6242362
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
47.7%