Mattermost Server 9.11.x < 9.11.10 / 10.5.x < 10.5.2 / 10.6.0 (MMSA-2025-00453)

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

include('compat.inc');

if (description)
{
  script_id(234796);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/05/22");

  script_cve_id("CVE-2025-27538");
  script_xref(name:"IAVA", value:"2025-A-0289-S");

  script_name(english:"Mattermost Server 9.11.x < 9.11.10 / 10.5.x < 10.5.2 / 10.6.0 (MMSA-2025-00453)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The version of Mattermost Server installed on the remote host is prior to 9.11.10 or 10.5.2 / 10.6.0. It is, therefore,
affected by a vulnerability as referenced in the MMSA-2025-00453 advisory.

  - Mattermost versions 10.5.x <= 10.5.1, 9.11.x <= 9.11.9 fail to enforce MFA checks in PUT
    /api/v4/users/user-id/mfa when the requesting user differs from the target user ID, which allows users
    with edit_other_users permission to activate or deactivate MFA for other users, even if those users have
    not set up MFA. (CVE-2025-27538)

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 9.11.10 / 10.5.2 / 10.6.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:M/C:N/I:P/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:H/PR:H/UI:N/S:U/C:N/I:L/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-2025-27538");

  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:"2025/04/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/03/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/04/24");

  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) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("mattermost_server_detect.nbin");
  script_require_keys("installed_sw/Mattermost Server");

  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 = [
  { 'min_version' : '9.11.0', 'fixed_version' : '9.11.10' },
  { 'min_version' : '10.5.0', 'fixed_version' : '10.5.2', 'fixed_display' : '10.5.2 / 10.6.0' }
];

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