CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
33.0%
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.
#%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);
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
33.0%