Keycloak < 24.0.0 DoS (CVE-2023-6841)

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

include('compat.inc');

if (description)
{
  script_id(207386);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/24");

  script_cve_id("CVE-2023-6841");
  script_xref(name:"IAVB", value:"2024-B-0135");

  script_name(english:"Keycloak < 24.0.0 DoS (CVE-2023-6841)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"A denial of service vulnerability was found in Keycloak < 24.0.0 where the amount of attributes per object is not limited,an 
attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with 
long attribute values.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://github.com/keycloak/keycloak/issues/32837");
  script_set_attribute(attribute:"solution", value:
"Upgrade Keycloak to 24.0.0 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-2023-6841");

  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:"2024/09/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/09/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/09/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:keycloak:keycloak");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  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("ssh_get_info.nasl", "command_builder_init.nasl", "keycloak_nix_installed.nbin");
  script_require_keys("Host/local_checks_enabled", "Host/uname");

  exit(0);
}

include('vcf.inc');

var app_info = vcf::get_app_info(app:'Keycloak');

var constraints = [
  {'fixed_version': '24.0.0'}
];

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