Mattermost Server < 7.8.5 / 7.9.x < 7.9.4 Improper Authorization (MMSA-2023-00157)

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

include('compat.inc');

if (description)
{
  script_id(180410);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/09");

  script_cve_id("CVE-2023-2193");
  script_xref(name:"IAVA", value:"2023-A-0446-S");

  script_name(english:"Mattermost Server < 7.8.5 / 7.9.x < 7.9.4 Improper Authorization (MMSA-2023-00157)");

  script_set_attribute(attribute:"synopsis", value:
"A web application running on the remote server is affected by an improper authorization vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Mattermost Server running on the remote host is prior to 7.8.5 or 7.9.x prior to 7.9.4. It is,
therefore, affected by an improper authorization vulnerability. Mattermost fails to invalidate existing authorization
codes when deauthorizing an OAuth2 app, allowing an attacker possessing an authorization code to generate an access
token.

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://mattermost.com/security-updates/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mattermost Server version 7.8.5, 7.9.4, 7.10.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/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:L/PR:N/UI:N/S:U/C:H/I:H/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-2023-2193");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/04/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/05/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/31");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mattermost:mattermost_server");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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("mattermost_server_detect.nbin");
  script_require_keys("installed_sw/Mattermost Server");
  script_require_ports("Services/www", 80, 443);

  exit(0);
}

include('vcf.inc');
include('http.inc');

var port = get_http_port(default:80);

var app_info = vcf::get_app_info(app:'Mattermost Server', port:port, webapp:TRUE);

var constraints = [
  { 'fixed_version' : '7.8.5' },
  { 'min_version' : '7.9', 'fixed_version' : '7.9.4' }
];

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