Vulnerabilities > CVE-2018-1999042 - Deserialization of Untrusted Data vulnerability in Jenkins

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
low complexity
jenkins
CWE-502
nessus

Summary

A vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in XStream2.java that allows attackers to have Jenkins resolve a domain name when deserializing an instance of java.net.URL.

Vulnerable Configurations

Part Description Count
Application
Jenkins
961

Common Weakness Enumeration (CWE)

Nessus

NASL familyCGI abuses
NASL idJENKINS_2_138.NASL
descriptionThe version of Jenkins running on the remote web server is prior to 2.138 or is a version of Jenkins LTS prior to 2.121.3. It is, therefore, affected by multiple vulnerabilities. Note that Nessus has not tested for these issues but has instead relied only on the application
last seen2020-06-01
modified2020-06-02
plugin id117337
published2018-09-06
reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/117337
titleJenkins < 2.121.3 / 2.138 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(117337);
  script_version("1.4");
  script_cvs_date("Date: 2019/11/01");

  script_cve_id(
    "CVE-2018-1999042",
    "CVE-2018-1999043",
    "CVE-2018-1999044",
    "CVE-2018-1999045",
    "CVE-2018-1999046",
    "CVE-2018-1999047"
  );

  script_name(english:"Jenkins < 2.121.3 / 2.138 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
2.138 or is a version of Jenkins LTS prior to 2.121.3. 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/2018-08-15/");
  script_set_attribute(attribute:"solution", value:
"Upgrade Jenkins to version 2.138 or later, Jenkins LTS to version
2.121.3 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N");
  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:L/UI:N/S:U/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1999045");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/06");

  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");
include("vcf.inc");

port = get_http_port(default:8080);

app = vcf::get_app_info(app:"Jenkins", webapp:TRUE, port:port);

if(app["LTS"])
  constraints = [{"fixed_version" : "2.121.3", "fixed_display" : "2.121.3 LTS / 2.138"}];
else
  constraints = [{"fixed_version" : "2.138", "fixed_display" : "2.121.3 LTS / 2.138"}];

vcf::check_version_and_report(app_info:app, constraints:constraints, severity:SECURITY_WARNING, strict:FALSE);