Mattermost Server 9.11.x < 9.11.6 / 10.0.x < 10.0.4 / 10.1.x < 10.1.4 / 10.2.x < 10.2.1 DoS (MMSA-2024-00402)

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

include('compat.inc');

if (description)
{
  script_id(214346);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/02/28");

  script_cve_id("CVE-2025-21088");
  script_xref(name:"IAVA", value:"2025-A-0017-S");

  script_name(english:"Mattermost Server 9.11.x < 9.11.6 / 10.0.x < 10.0.4 / 10.1.x < 10.1.4 / 10.2.x < 10.2.1 DoS (MMSA-2024-00402)");

  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 9.11.x prior to 9.11.6, 10.0.x prior 
to 10.0.4, 10.1.x prior to 10.1.4, or 10.2.x prior to 10.2.0. It is, therefore, affected by a 
denial of service vulnerability due to a failure to properly validate the style of proto supplied to 
an action's style in post.props.attachments, which allows an attacker to crash the frontend via 
crafted malicious input.

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 9.11.6, 10.0.4,  10.1.4, 10.2.1, 10.3.0, or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/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:L/UI:N/S:U/C:N/I:N/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-2025-21088");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(704);

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/01/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/12/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/01/17");

  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', 'max_version' : '9.11.5', 'fixed_version' : '9.11.6' },
  { 'min_version' : '10.0', 'max_version' : '10.0.3', 'fixed_version' : '10.0.4' },
  { 'min_version' : '10.1', 'max_version' : '10.1.3', 'fixed_version' : '10.1.4' },
  { 'min_version' : '10.2', 'fixed_version' : '10.2.1', 'fixed_display' : '10.2.1 or 10.3.0' }
];

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