IBM DataPower Gateway Security Bypass

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

include('compat.inc');

if (description)
{
  script_id(138763);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/21");

  script_cve_id("CVE-2019-4621");

  script_name(english:"IBM DataPower Gateway Security Bypass");

  script_set_attribute(attribute:"synopsis", value:
"A web application running on the remote host is affected by a
security bypass vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the IBM DataPower Gateway running on the remote host is affected by a security
bypass vulnerability due to a default account that is present if the IPMI LAN channel is enabled. A remote attacker
could use this account to gain unauthorised access to the BMC.");
  script_set_attribute(attribute:"see_also", value:"https://exchange.xforce.ibmcloud.com/vulnerabilities/168883");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory for patch details.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:N/AC:L/PR:N/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-2019-4621");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/20");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:datapower_gateway");
  script_end_attributes();

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

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

  script_dependencies("ibm_datapower_gateway_detect.nbin");
  script_require_keys("installed_sw/IBM DataPower Gateway");
  script_require_ports("Services/www", 9090);

  exit(0);
}

include('vcf.inc');
include('http.inc');
include('webapp_func.inc');

port = get_http_port(default:9090);

vcf::add_separator('-');
app_info = vcf::get_app_info(app:'IBM DataPower Gateway', port:port, webapp:TRUE);

url = build_url(port:port, qs:dir);

version = app_info["version"];
if (version == UNKNOWN_VER) audit(AUDIT_UNKNOWN_WEB_APP_VER, 'IBM DataPower Gateway', url);

constraints = [
  { "min_version" : "6.0.14", "max_version" : "7.6.0.0-7", 'fixed_display' : '> 7.6.0.0-7'},
  { "min_version" : "2018.4.1.0", "max_version" : "2018.4.1.5", 'fixed_display' : '> 2018.4.1.5'} 
];

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