Fluent Bit Heap-based Buffer Overflow

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

include('compat.inc');

if (description)
{
  script_id(197568);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/24");

  script_cve_id("CVE-2024-4323");
  script_xref(name:"TRA", value:"TRA-2024-17");
  script_xref(name:"IAVA", value:"2024-A-0301");

  script_name(english:"Fluent Bit Heap-based Buffer Overflow");

  script_set_attribute(attribute:"synopsis", value:
"A logging processor application is affected by a heap-based buffer
overflow vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Fluent Bit running on the remote host is prior
to 3.0.4. It is, therefore, is affected by a heap-based buffer
overflow vulnerability.

Note that Nessus has not tested for this issue but has instead
relied only on the application's self-reported version number.");
  # https://www.tenable.com/blog/linguistic-lumberjack-attacking-cloud-services-via-logging-endpoints-fluent-bit-cve-2024-4323
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b3e7f3fe");
  script_set_attribute(attribute:"solution", value:
"Upgrade to v3.0.4 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-4323");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"in_the_news", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/05/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/05/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/05/21");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/a:fluent_bit:fluent_bit");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("fluent_bit_detect.nbin");
  script_require_keys("installed_sw/Fluent Bit");

  exit(0);
}

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

var app = 'Fluent Bit';
var port = get_http_port(default:2020);
var app_info = vcf::get_app_info(app:app, port:port, webapp:TRUE);

var constraints = [
  {'min_version':'2.0.7', 'fixed_version':'3.0.4'}
];

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