IBM MQ 7.1.x / 7.5.x / 8.0.0.x < 8.0.0.15 / 9.0.0.x < 9.0.0.10 / 9.1.0.x < 9.1.0.5 LTS / 9.1.x < 9.1.5 CD Denial of Service Vulnerability (DoS)

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

include('compat.inc');

if (description)
{
  script_id(137658);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/08/21");

  script_cve_id("CVE-2020-4310");
  script_xref(name:"IAVA", value:"2020-A-0269-S");

  script_name(english:"IBM MQ 7.1.x / 7.5.x / 8.0.0.x < 8.0.0.15 / 9.0.0.x < 9.0.0.10 / 9.1.0.x < 9.1.0.5 LTS / 9.1.x < 9.1.5 CD Denial of Service Vulnerability (DoS)");
  script_summary(english:"Checks the version of IBM MQ.");

  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 8.0.0.x prior to 8.0.0.14 or 9.1.0.x prior to 9.1.0.5 LTS or 9.1.5 CD 
and is therefore affected by a denial of service vulnerability. An authenticated,
remote attacker can exploit this issue and cause an error in the data conversion
logic that will crash the affected host.");
  script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/6223914");
  script_set_attribute(attribute:"solution", value:
"Install the fix for APAR IT30605 or upgrade to IBM MQ 8.0.0.15, 9.0.0.10, 9.1.0.5 LTS, 9.1.5 CD or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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: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-2020-4310");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/04/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/19");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  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:"Windows");

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

  script_dependencies("websphere_mq_installed.nasl");
  script_require_keys("installed_sw/IBM WebSphere MQ", "Settings/ParanoidReport");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("install_func.inc");

if (report_paranoia < 2) audit(AUDIT_PARANOID);
app_name = "IBM WebSphere MQ";
install  = get_single_install(app_name:app_name, exit_if_unknown_ver:TRUE);

version  = install['version'];
path = install['path'];
fix = NULL;

if(version =~ "^7\.1\." || version =~ "^7\.5\.")
{
  fix = 'Apply Interim Fix APAR IT30605';
  flag = TRUE;
} # 8.0.x < 8.0.0.15
else if (version =~ "^8\.0\.0\.")
{
  fix = "8.0.0.15";
}
else if (version =~ "^9\.0\.")
{
  fix = "9.0.0.10";
}
# 9.1.x < 9.1.0.5 LTS
else if (version =~ "^9\.1\.0\.")
{
  fix = "9.1.0.5";
}
# 9.1.1 < 9.1.5 CD
else if (version =~ "^9\.1\.[1-4]($|\.)")
{
  fix = "9.1.5";
}
else
  audit(AUDIT_INST_PATH_NOT_VULN, app_name, version, path);

if(flag || ver_compare(ver:version, fix:fix, strict:FALSE) == -1)
{
  port = get_kb_item("SMB/transport");
  if (!port) port = 445;
  report =
    '\n  Path              : ' + path +
    '\n  Installed version : ' + version +
    '\n  Fixed version     : ' + fix +
    '\n';
  security_report_v4(port:port, extra:report, severity:SECURITY_WARNING);
}
else audit(AUDIT_INST_PATH_NOT_VULN, app_name, version, path);