Vulnerabilities > CVE-2018-1999006 - Information Exposure vulnerability in Jenkins

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(111603);
  script_version("1.5");
  script_cvs_date("Date: 2019/11/04");

  script_cve_id(
    "CVE-2018-1999001",
    "CVE-2018-1999002",
    "CVE-2018-1999003",
    "CVE-2018-1999004",
    "CVE-2018-1999005",
    "CVE-2018-1999006",
    "CVE-2018-1999007"
  );

  script_name(english:"Jenkins < 2.121.2 / 2.133 Multiple Vulnerabilities");
  script_summary(english:"Checks the Jenkins version.");

  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
2.133 or is a version of Jenkins LTS prior to 2.121.2. It is,
therefore, affected by multiple vulnerabilities.

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://jenkins.io/security/advisory/2018-07-18/");
  script_set_attribute(attribute:"solution", value:
"Upgrade Jenkins to version 2.133 or later, Jenkins LTS to version
2.121.2 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  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:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1999002");

  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:"2018/07/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/07/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/09");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cloudbees:jenkins");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("jenkins_detect.nasl");
  script_require_keys("www/Jenkins");
  script_require_ports("Services/www", 8080);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");

port = get_http_port(default:8080);
get_kb_item_or_exit("www/Jenkins/"+port+"/Installed");
url = build_url(qs:'/', port:port);

version = '';
fix = '';
if (get_kb_item("www/Jenkins/"+port+"/is_LTS") )
{
  appname = "Jenkins Open Source LTS";
  fix = '2.121.2';
}
else
{
  appname = "Jenkins Open Source";
  fix = '2.133';
}

version = get_kb_item("www/Jenkins/" + port + "/JenkinsVersion");
if (version == 'unknown')
{
  audit(AUDIT_UNKNOWN_WEB_APP_VER, appname, url);
}

if (ver_compare(ver:version, fix:fix, strict:FALSE) < 0)
{
  report =
    '\n  URL           : ' + url +
    '\n  Product       : ' + appname +
    '\n  Version       : ' + version +
    '\n  Fixed version : ' + fix +
    '\n';

  security_report_v4(port:port, severity:SECURITY_WARNING, extra:report, xss:TRUE);
}
else audit(AUDIT_WEB_APP_NOT_AFFECTED, appname, url, version);