IBM MQ 7.1 / 7.5 / 8.0 < 8.0.0.15 / 9.0 < 9.0.0.10 LTS / 9.1 < 9.1.0.5 LTS / 9.1 < 9.2 CD DoS

##
# (C) Tenable Network Security, Inc.
##

include('compat.inc');

if (description)
{
  script_id(139731);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/07/05");

  script_cve_id("CVE-2020-4376");
  script_xref(name:"IAVA", value:"2020-A-0383-S");

  script_name(english:"IBM MQ 7.1 / 7.5 / 8.0 < 8.0.0.15 / 9.0 < 9.0.0.10 LTS / 9.1 < 9.1.0.5 LTS / 9.1 < 9.2 CD DoS");

  script_set_attribute(attribute:"synopsis", value:
"A message queuing service installed on the remote host is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the IBM MQ server installed on the remote host is 7.1, 7.5, 8.0.0.x prior to
8.0.0.15, 9.0.x prior to 9.0.0.10, 9.1.0.x prior to 9.1.0.5, or 9.1.x prior to 9.2 and it is therefore affected by a
denial of service (DoS) vulnerability due to an error within the pubsub logic.");
  script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/6255992");
  script_set_attribute(attribute:"solution", value:
"Install fix for APAR IT32141 or upgrade to IBM MQ 8.0.0.15, 9.0.0.10, 9.1.0.5, 9.2, or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:L/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-2020-4376");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/08/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/08/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/08/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:websphere_mq");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2020-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ibm_mq_nix_installed.nbin", "websphere_mq_installed.nasl");
  script_require_keys("installed_sw/IBM WebSphere MQ");

  exit(0);
}

include('vcf.inc');

app = 'IBM WebSphere MQ';
app_info = vcf::get_app_info(app:app);

# Not checking for interim fix, so require paranoia for these versions only
if (app_info['version'] =~ "7\.(1|5)([^0-9]|$)" && report_paranoia < 2)
  audit(AUDIT_PARANOID);

if (app_info['Type'] != 'Server')
  audit(AUDIT_HOST_NOT, 'an affected product');

# check if CD - less than 4 version segments or non-0 3rd (M) segment
# https://www.ibm.com/support/pages/ibm-mq-faq-long-term-support-and-continuous-delivery-releases
# We see CD on lab host is detected as: 9.0.3.0
if (app_info['version'] =~ "^9\.([0-9]+\.?){0,2}$" || app_info['version'] =~ "^9\.[0-9]\.[1-9]")
{
  constraints = [{ 'min_version' : '9.0', 'fixed_version' : '9.2'}];
}
else
{
  constraints = [
    { 'min_version' : '7.1',  'fixed_version'   :  '7.2', 'fixed_display' : 'Contact IBM Support and request a fix for APAR IT31349'},
    { 'min_version' : '7.5',  'fixed_version'   :  '7.6', 'fixed_display' : 'Contact IBM Support and request a fix for APAR IT31349'},
    { 'min_version' : '8.0',  'fixed_version' : '8.0.0.15'},
    { 'min_version' : '9.0',  'fixed_version' : '9.0.0.10'},
    { 'min_version' : '9.1',  'fixed_version' : '9.1.0.5'}
  ];
}

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);