Jenkins < (2.204.6 / 2.222.1) LTS / 2.228 Multiple Vulnerabilities

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

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

if (description)
{
  script_id(135178);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/05");

  script_cve_id(
    "CVE-2020-2160",
    "CVE-2020-2161",
    "CVE-2020-2162",
    "CVE-2020-2163"
  );
  script_xref(name:"IAVA", value:"2020-A-0126-S");

  script_name(english:"Jenkins < (2.204.6 / 2.222.1) LTS / 2.228 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"A job scheduling and management system hosted on the remote web server is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Jenkins running on the remote web server is prior to 2.228 or is a version of Jenkins LTS prior to 
2.204.6 or 2.222.1. It is, therefore, affected by multiple vulnerabilities:

  - An authentication bypass vulnerability exists in Jenkins' CSRF prevention component. An unauthenticated, remote 
    attacker can exploit this, by sending specially crafted requests to a vulnerable Jenkins instance, to bypass 
    authentication and conduct a CSRF attack (CVE-2020-2160).

  - A stored cross-site scripting (XSS) vulnerability exists in Jenkins' label expression validation component due to 
    improper validation of user-supplied input before returning it to users. An authenticated, remote attacker can 
    exploit this, by convincing a user to click a specially crafted URL, to execute arbitrary script code in a user's 
    browser session (CVE-2020-2161).

  - A stored cross-site scripting (XSS) vulnerability exists in Jenkins' file parameter component due to improper 
    validation of user-supplied input before returning it to users. An authenticated, remote attacker can exploit this,
    by convincing a user to click a specially crafted URL, to execute arbitrary script code in a user's browser 
    session (CVE-2020-2162).

  Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
  number.");
  # https://jenkins.io/security/advisory/2020-03-25/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?edd15de3");
  script_set_attribute(attribute:"solution", value:
"Upgrade Jenkins to version 2.228 or later. Upgrade Jenkins LTS to version 2.204.6, 2.222.1 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  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:R/S:U/C:H/I:H/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-2020-2160");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/02");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cloudbees:jenkins");
  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) 2020-2024 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 = [
  { 'fixed_version' : '2.228',    'fixed_display' : '2.204.6 or 2.222.1 LTS / 2.228',  'edition' : 'Open Source' },
  { 'fixed_version' : '2.204.6',  'fixed_display' : '2.204.6 or 2.222.1 LTS / 2.228',  'edition' : 'Open Source LTS' }
];

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