IBM DB2 11.1 < 11.5.7.0 Special Build 29113 / 11.5.8.0 < 11.5.8.0 Special Build 29133 Denial of Service (Unix)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(175063);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/12");

  script_cve_id("CVE-2023-27555");
  script_xref(name:"IAVB", value:"2023-B-0028-S");

  script_name(english:"IBM DB2 11.1 < 11.5.7.0 Special Build 29113 / 11.5.8.0 < 11.5.8.0 Special Build 29133 Denial of Service (Unix)");

  script_set_attribute(attribute:"synopsis", value:
"The remote database server is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, IBM Db2 is vulnerable to a denial of service when attempting to use ACR
client affinity for unfenced DRDA federation wrappers.

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/6985683");
  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_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/I:N/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-2023-27555");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/04/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/04/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/05/03");

  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:"Databases");

  script_copyright(english:"This script is Copyright (C) 2023-2024 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('vcf_extras_db2.inc');

# The remote host's OS is Windows, not Linux.
if (get_kb_item('SMB/db2/Installed'))
  audit(AUDIT_OS_NOT, 'Unix', 'Windows');

var app_info = vcf::ibm_db2::get_app_info();
# 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' >< app_info['platform'])
  audit(AUDIT_HOST_NOT, 'a Unix based operating system');

var constraints = [
  {'equal':'11.5.7.0', 'fixed_build':'29113', 'fixed_display':'11.5.7.0 + Special Build 29133 or 11.5.9 Fix Pack 0'},
  {'equal':'11.5.8.0', 'fixed_build':'29133', 'fixed_display':'11.5.8.0 + Special Build 29133 or 11.5.9 Fix Pack 0'},
  {'min_version':'11.5.8', 'fixed_version':'11.5.8.0', 'fixed_display':'11.5.8.0 + Special Build 29133 or 11.5.9 Fix Pack 0'}
];

vcf::ibm_db2::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);