Jenkins Enterprise and Operations Center < 2.249.31.0.1 / 2.277.3.1 DoS (CloudBees Security Advisory 2021-04-20)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(155587);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/04");

  script_cve_id("CVE-2021-28165");

  script_name(english:"Jenkins Enterprise and Operations Center < 2.249.31.0.1 / 2.277.3.1 DoS (CloudBees Security Advisory 2021-04-20)");

  script_set_attribute(attribute:"synopsis", value:
"A job scheduling and management system hosted on the remote web server is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Jenkins Enterprise or Jenkins Operations Center running on the remote web server is 2.249.x prior to
2.249.31.0.1, or 2.x prior to 2.277.3.1. It is, therefore, affected by a denial of service vulnerability due to an issue
with Winstone-Jetty. An unauthenticated, remote attacker can exploit this by sending a large invalid SSL/TLS frame, to
cause CPU usage to hit 100% and cause the system to stop responding.

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://www.cloudbees.com/cloudbees-security-advisory-2021-04-20");
  script_set_attribute(attribute:"solution", value:
"Upgrade Jenkins Enterprise or Jenkins Operations Center to version 2.249.31.0.1, 2.277.3.1 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  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:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-28165");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/04/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/04/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/11/18");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cloudbees:jenkins");
  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) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("jenkins_detect.nasl", "jenkins_win_installed.nbin", "jenkins_nix_installed.nbin", "macosx_jenkins_installed.nbin");
  script_require_keys("installed_sw/Jenkins");

  exit(0);
}

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

var app_info = vcf::combined_get_app_info(app:'Jenkins');

var constraints = [
  { 'min_version' : '2.249',  'fixed_version' : '2.249.31.0.1', 'edition' : make_list('Enterprise', 'Operations Center') },
  { 'min_version' : '2',      'fixed_version' : '2.277.3.1',    'edition' : make_list('Enterprise', 'Operations Center'), 'rolling_train' : TRUE },
];

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