Apple TV < 14.3 Multiple Vulnerabilities

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

include('compat.inc');

if (description)
{
  script_id(146458);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/05/10");

  script_cve_id(
    "CVE-2020-15969",
    "CVE-2020-27943",
    "CVE-2020-27944",
    "CVE-2020-27946",
    "CVE-2020-27948",
    "CVE-2020-29611",
    "CVE-2020-29617",
    "CVE-2020-29618",
    "CVE-2020-29619",
    "CVE-2020-29624"
  );
  script_xref(name:"APPLE-SA", value:"HT212005");
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2020-12-14-7");

  script_name(english:"Apple TV < 14.3 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"The remote Apple TV device is affected by multiple vulnerabilities");
  script_set_attribute(attribute:"description", value:
"According to its banner, the version of Apple TV on the remote device is prior to 14.3. It is, therefore, affected by
multiple vulnerabilities as described in the HT212005 advisory:

  - An out-of-bounds write issue within CoreAudio processing may allow a maliciously crafted audio file to cause
    arbitrary code execution. (CVE-2020-27948)

  - A memory corruption issue within FontParser processing may allow a maliciously crafted font file to cause
    arbitrary code execution. (CVE-2020-27943, CVE-2020-27944, CVE-2020-29624)

  - An out-of-bounds read isue within ImageIO processing may allow maliciously crafted image to cause arbitrary
    code execution. (CVE-2020-29618)
    
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported
version number.");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT212005");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apple TV version 14.3 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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-29624");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-15969");

  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:"2020/12/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/12/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/02/12");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apple:apple_tv");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("appletv_version.nasl");
  script_require_keys("AppleTV/Version", "AppleTV/Model", "AppleTV/URL", "AppleTV/Port");
  script_require_ports("Services/www", 7000);

  exit(0);
}

include('appletv_func.inc');

url = get_kb_item_or_exit('AppleTV/URL', msg:'Cannot determine Apple TV URL.');

port = get_kb_item_or_exit('AppleTV/Port', msg:'Cannot determine Apple TV port.');

build = get_kb_item_or_exit('AppleTV/Version', msg:'Cannot determine Apple TV version.');

model = get_kb_item_or_exit('AppleTV/Model', msg:'Cannot determine Apple TV model.');

fixed_build = '18K561';
tvos_ver = '14.3';

# determine gen from the model
gen = APPLETV_MODEL_GEN[model];

appletv_check_version(
  build          : build,
  fix            : fixed_build,
  affected_gen   : make_list(4, 5),
  fix_tvos_ver   : tvos_ver,
  model          : model,
  gen            : gen,
  port           : port,
  url            : url,
  severity       : SECURITY_WARNING
);