IBM WebSphere Application Server 8.5.x < 8.5.5.15 / 9.0.0.x < 9.0.0.9 TLS Downgrade Vulnerability (CVE-2018-1719)

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

include("compat.inc");

if (description)
{
  script_id(125595);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/11/30");

  script_cve_id("CVE-2018-1719");
  script_bugtraq_id(108496);

  script_name(english:"IBM WebSphere Application Server 8.5.x < 8.5.5.15 / 9.0.0.x < 9.0.0.9 TLS Downgrade Vulnerability (CVE-2018-1719)");
  script_summary(english:"Reads the version number from the SOAP and GIOP services.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web application server is affected by a TLS downgrade
vulnerability.");
  script_set_attribute(attribute:"description", value:
"The IBM WebSphere Application Server running on the remote host is
version 8.5.x prior to 8.5.5.15, or 9.0.0.x prior to 9.0.0.9. It is,
therefore, potentially affected by TLS downgrade vulnerability.");
  script_set_attribute(attribute:"see_also", value:"https://www-01.ibm.com/support/docview.wss?uid=ibm10718837");
  script_set_attribute(attribute:"solution", value:
"Upgrade to IBM WebSphere Application Server 8.5.5.15 or 9.0.0.9 or
later. Alternatively, upgrade to the minimal fix pack levels required
by the interim fix and then apply Interim Fix PI98768.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1719");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/09/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/30");

  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) 2019-2020 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 PI98768";

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 ('PI98768' >< app_info['Fixes'])
  audit(AUDIT_INST_VER_NOT_VULN, app);

constraints = [
  {"min_version":"8.5.0.0", "max_version":"8.5.5.14", "fixed_version":"8.5.5.15 or " + fix},
  {"min_version":"9.0.0.0", "max_version":"9.0.0.8", "fixed_version":"9.0.0.9 or " + fix}
];

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