IBM WebSphere Application Server 7.0.0.x <= 7.0.0.45 / 8.0.0.x <= 8.0.0.15 / 8.5.x < 8.5.5.18 / 9.0.x < 9.0.5.4 Remote Code Execution (CVE-2020-4448)

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

include('compat.inc');

if (description)
{
  script_id(137398);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/11/30");

  script_cve_id("CVE-2020-4448");
  script_xref(name:"IAVA", value:"2020-A-0254-S");

  script_name(english:"IBM WebSphere Application Server 7.0.0.x <= 7.0.0.45 / 8.0.0.x <= 8.0.0.15 / 8.5.x < 8.5.5.18 / 9.0.x < 9.0.5.4 Remote Code Execution (CVE-2020-4448)");

  script_set_attribute(attribute:"synopsis", value:
"The remote web application server is affected by a remote code execution vulnerability");
  script_set_attribute(attribute:"description", value:
"The IBM WebSphere Application Server running on the remote host is version 7.0.0.0 through 7.0.0.45, 8.0.0.0 through
8.0.0.15, 8.5.0.x prior to 8.5.5.18, or 9.0.x prior to 9.0.5.4. It is, therefore, affected by a remote code execution
vulnerability. An authenticated, remote attacker can exploit this by sending a specially crafted sequence of 
serialized objects to cause remote code execution on the system.");
  script_set_attribute(attribute:"see_also", value:"https://exchange.xforce.ibmcloud.com/vulnerabilities/181228");
  # https://www.ibm.com/support/pages/node/6220336
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7972faa3");
  script_set_attribute(attribute:"solution", value:
"Upgrade to IBM WebSphere Application Server 8.5.5.18, 9.0.5.4, or later. Alternatively, upgrade to the minimal fix pack
levels required by the interim fix and then apply Interim Fix PH25216.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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-2020-4448");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/06/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/06/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/12");

  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_set_attribute(attribute:"stig_severity", value:"I");
  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 PH25216';

get_install_count(app_name:app, exit_if_zero:TRUE);
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 ('PH25216' >< app_info['Fixes'])
  audit(AUDIT_INST_VER_NOT_VULN, app);

constraints = [
  {'min_version':'7.0.0.0', 'max_version':'7.0.0.45', 'fixed_version':fix},
  {'min_version':'8.0.0.0', 'max_version':'8.0.0.15', 'fixed_version':fix},
  {'min_version':'8.5.0.0', 'max_version':'8.5.5.17', 'fixed_version':'8.5.5.18 or ' + fix},
  {'min_version':'9.0.0.0', 'max_version':'9.0.5.3', 'fixed_version':'9.0.5.4 or ' + fix}
];

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