Tenda AC Router RCE (CVE-2020-10987)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(186360);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/29");

  script_cve_id("CVE-2020-10987");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");

  script_name(english:"Tenda AC Router RCE (CVE-2020-10987)");

  script_set_attribute(attribute:"synopsis", value:
"The remote router is affected by a remote code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The firmware version of the Tenda AC Router is an AC15 AC1900 device with a firmware version of 15.03.05.19 or below.
It is, therefore, affected by a remote code execution vulnerability. An unauthenticated, remote attacker can exploit
this, via the deviceName POST parameter, to execute arbitrary system commands.

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://nvd.nist.gov/vuln/detail/CVE-2020-10987");
  script_set_attribute(attribute:"solution", value:
"Update to a newer version of device firmware.");
  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:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-10987");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/07/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/07/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/28");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:tenda:ac15");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("tenda_ac_router_detect.nbin");
  script_require_keys("installed_sw/Tenda AC Router");

  exit(0);
}

include('vcf_extras_tenda.inc');

var app_info = vcf::tenda::get_app_info();

var constraints = [
  { 'model' : 'AC15', 'max_version' : '15.03.05.19',  'fixed_display' : 'Upgrade to a newer firmware' }
];

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