Security Update for Microsoft Visual Studio Code Python Extension (May 2020)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#


# The descriptive text and package checks in this plugin were
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(136617);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/05/13");

  script_cve_id("CVE-2020-1171", "CVE-2020-1192");
  script_xref(name:"IAVA", value:"2020-A-0216-S");

  script_name(english:"Security Update for Microsoft Visual Studio Code Python Extension (May 2020)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has an application installed that is missing a security update.");
  script_set_attribute(attribute:"description", value:
"A remote code execution (RCE) vulnerability exists in Visual Studio Code when the 
Python extension loads configuration files after opening a project. An attacker 
who successfully exploited the vulnerability could run arbitrary code in the 
context of the current user. If the current user is logged on with administrative 
user rights, an attacker could take control of the affected system. An attacker 
could then install programs; view, change, or delete data; or create new accounts 
with full user rights.

To exploit this vulnerability, an attacker would need to convince a target to 
clone a repository and open it in Visual Studio Code with the Python extension 
installed. Attacker-specified code would execute when the target opened the 
integrated terminal.

The update address the vulnerability by modifying the way Visual Studio Code Python 
extension handles environment variables.");
  # https://github.com/microsoft/vscode-python/releases/tag/2020.5.78807
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0cf4743e");
  # https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1171
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?87a8b7a9");
  script_set_attribute(attribute:"solution", value:
"Upgrade Python Extensin of VS Code to 2020.5.78807 or later.");
  script_set_attribute(attribute:"agent", value:"windows");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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: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-2020-1192");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-1171");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:visual_studio_code");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2020-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_visual_studio_code_win_extensions_installed.nbin");
  script_require_keys("installed_sw/Microsoft Visual Studio Code");

  exit(0);
}

include('vcf.inc');

app_info = vcf::get_app_info(app:'vs-code::python', win_local:TRUE);

vcf::check_granularity(app_info:app_info, sig_segments:3);

constraints = [
  { 'fixed_version' : '2020.5.78807' }
];

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