IBM WebSphere Application Server 9.0.x < 9.0.5.3 DoS (CVE-2019-12406)

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

include('compat.inc');

if (description)
{
  script_id(141562);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/11/30");

  script_cve_id("CVE-2019-12406");

  script_name(english:"IBM WebSphere Application Server 9.0.x < 9.0.5.3 DoS (CVE-2019-12406)");

  script_set_attribute(attribute:"synopsis", value:
"The remote web application server is affected by a denial of service vulnerability");
  script_set_attribute(attribute:"description", value:
"The IBM WebSphere Application Server running on the remote host is version 9.0.x prior to 9.0.5.3. It is, therefore,
affected by a denial of service (DoS) vulnerability in the Apache CXF library used by the WebSphere Application Server,
which does not restrict the number of message attachments present in a given message. An unauthenticated, remote
attacker can exploit this, by crafting a message containing a very large number of message attachments, in order to
cause a denial of service condition.

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/1288774");
  script_set_attribute(attribute:"solution", value:
"Upgrade to IBM WebSphere Application Server 9.0.5.3, or later. Alternatively, upgrade to the minimal fix pack levels
required by the interim fix and then apply Interim Fix PH19989.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:R/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-2019-12406");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/02/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/10/20");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:websphere_application_server");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Web Servers");

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

  script_dependencies("websphere_detect.nasl", "ibm_enum_products.nbin", "ibm_websphere_application_server_nix_installed.nbin");
  script_require_keys("installed_sw/IBM WebSphere Application Server");

  exit(0);
}

include('vcf.inc');

app = 'IBM WebSphere Application Server';
fix = 'Interim Fix PH19989';

app_info = vcf::combined_get_app_info(app:app);
vcf::check_granularity(app_info:app_info, sig_segments:4);

# If the detection is only remote, Source will be set, and we should require paranoia
if (!empty_or_null(app_info['Source']) && app_info['Source'] != 'unknown' && report_paranoia < 2)
  audit(AUDIT_PARANOID);

if ('PH19989' >< app_info['Fixes'])
  audit(AUDIT_INST_VER_NOT_VULN, app);

constraints = [
  {'min_version':'9.0.0.0', 'max_version':'9.0.5.2', 'fixed_version':'9.0.5.3 or ' + fix}
];

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