IBM WebSphere Application Server 7.0.0.x <= 7.0.0.45 / 8.0.0.x <= 8.0.0.15 / 8.5.x <= 8.5.5.17 / 9.0.x <= 9.0.5.4 RCE (6255074)

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

include('compat.inc');

if (description)
{
  script_id(140453);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/11/30");

  script_cve_id("CVE-2020-4534");

  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 <= 8.5.5.17 / 9.0.x <= 9.0.5.4 RCE (6255074)");

  script_set_attribute(attribute:"synopsis", value:
"The remote web application server is affected by 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, 8.5.0.0
through to 8.5.5.17, or 9.0.0.0 through 9.0.5.4. It is, therefore,
affected by an remote code execution vulnerability. An authenticated,
local attacker can exploit this by scheduling a task with a specially-crafted 
UNC path and execute arbitrary code with higher privileges");
  script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/6255074");
  # https://exchange.xforce.ibmcloud.com/vulnerabilities/182808
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?af4a844e");
  script_set_attribute(attribute:"solution", value:
"Upgrade to IBM WebSphere Application Server 8.5.5.18, 9.0.5.5, or later. Alternatively, upgrade
to the minimal fix pack levels required by the interim fix and then apply Interim Fix PH26083.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:L/UI:N/S:C/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-2020-4534");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/07/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/07/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/09/09");

  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", "os_fingerprint.nasl", "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 PH26083';

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 ('PH26083' >< 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' : '9.0.5.4',  'fixed_version' : '9.0.5.5 or ' + fix}
];

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