Microsoft Edge (Chromium) < 80.0.361.66 Insufficient Policy Enforcement

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

include('compat.inc');

if (description)
{
  script_id(138216);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/09");

  script_cve_id("CVE-2020-6420");

  script_name(english:"Microsoft Edge (Chromium) < 80.0.361.66 Insufficient Policy Enforcement");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has an web browser installed that is affected by an insufficient policy enforcement vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Microsoft Edge (Chromium) installed on the remote Windows host is prior to 80.0.361.66. It is, therefore,
affected by an insufficient policy enforcement vulnerability. An unauthenticated, remote attacker can exploit this, via
a crafted HTML page, to bypass same-origin policy.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/ADV200002
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b4f0f972");
  # https://docs.microsoft.com/en-us/deployedge/microsoft-edge-relnotes-security
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2ec7f076");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Microsoft Edge (Chromium) 80.0.361.66 or later.");
  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:R/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-2020-6420");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:edge");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

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

  script_dependencies("microsoft_edge_chromium_installed.nbin");
  script_require_keys("installed_sw/Microsoft Edge (Chromium)", "SMB/Registry/Enumerated");

  exit(0);
}

include('vcf.inc');

get_kb_item_or_exit('SMB/Registry/Enumerated');

app_info = vcf::get_app_info(app:'Microsoft Edge (Chromium)', win_local:TRUE);

constraints = [{ 'fixed_version' : '80.0.361.66' }];

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