IBM MQ 8.0.0.x < 8.0.0.14 / 9.1.0.x < 9.1.0.4 LTS / 9.1.x < 9.1.4 CD Security Restrictions Bypass (CVE-2019-4620)

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

include('compat.inc');

if (description)
{
  script_id(133402);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/10/07");

  script_cve_id("CVE-2019-4620");
  script_xref(name:"IAVA", value:"2020-A-0047-S");

  script_name(english:"IBM MQ 8.0.0.x < 8.0.0.14 / 9.1.0.x < 9.1.0.4 LTS / 9.1.x < 9.1.4 CD Security Restrictions Bypass (CVE-2019-4620)");

  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 9.1.0.4 LTS or 9.1.4 CD 
and is therefore affected by a security restrictions bypass vulnerabylity. An authenticated,
remote attacker can exploit this issue, via an unspecified vector, to gain privileged
rights in the affected host.");
  script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/1125891");
  script_set_attribute(attribute:"see_also", value:"https://exchange.xforce.ibmcloud.com/vulnerabilities/168863");
  script_set_attribute(attribute:"solution", value:
"Upgrade to IBM MQ 8.0.0.14, 9.1.0.4 LTS, 9.1.4 CD or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
  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-2019-4620");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/01/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/31");

  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");

  exit(0);
}

include('install_func.inc');

app_name = 'IBM WebSphere MQ';
install  = get_single_install(app_name:app_name, exit_if_unknown_ver:TRUE);
if (install['Type'] != 'Server') audit(AUDIT_HOST_NOT,'affected');

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

# 8.0.x < 8.0.0.14
if (version =~ "^8\.0\.0\.")
{
  fix = '8.0.0.14';
}
# 9.1.x < 9.1.0.4 LTS
else if (version =~ "^9\.1\.0\.")
{
  fix = '9.1.0.4';
}
# 9.1.1 < 9.1.4 CD
else if (version =~ "^9\.1\.[1-3]($|\.)")
{
  fix = '9.1.4';
}
else
  audit(AUDIT_INST_PATH_NOT_VULN, app_name, version, path);

if (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);