Apache ActiveMQ 5.19.7 < 5.19.8 / 6.2.6 < 6.2.7 DoS

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

include('compat.inc');

if (description)
{
  script_id(324952);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/06");

  script_cve_id("CVE-2026-50750");
  script_xref(name:"IAVA", value:"2026-B-0181");

  script_name(english:"Apache ActiveMQ 5.19.7 < 5.19.8 / 6.2.6 < 6.2.7 DoS");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is running a web application that is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Apache ActiveMQ running on the remote host is 5.19.7 prior to 5.19.8 or 6.2.6 prior to 6.2.7. It is,
therefore, affected by a denial of service vulnerability.

  - Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.
    Following the fix for CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending repeated
    BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM. (CVE-2026-50750)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://activemq.apache.org/security-advisories.data/CVE-2026-50750-announcement.txt
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?44420d21");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apache ActiveMQ version 5.19.8, 6.2.7, or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:N/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-2026-50750");

  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:"2026/06/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/03");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:activemq");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_set_attribute(attribute:"enable_cgi_scanning", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("activemq_web_console_detect.nasl", "apache_activemq_nix_installed.nbin", "activemq_listen_port_detect.nbin");
  script_require_keys("installed_sw/Apache ActiveMQ");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Apache ActiveMQ', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '5.19.7', 'fixed_version': '5.19.8'},
        {'min_version': '6.2.6', 'fixed_version': '6.2.7'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:result);