Jenkins Enterprise and Operations Center < rev3 / rev3 / rev2 Multiple Vulnerabilities (CloudBees Security Advisory 2021-02-24)

high Nessus Plugin ID 155630
New! Plugin Severity Now Using CVSS v3

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A job scheduling and management system hosted on the remote web server is affected by multiple vulnerabilities.


The version of Jenkins Enterprise or Jenkins Operations Center running on the remote web server is 2.222.x prior to rev3, 2.249.x prior to rev3, or 2.x prior to rev2. It is, therefore, affected by multiple vulnerabilities, including the following:

- A cross-site request forgery (CSRF) vulnerability in Jenkins Configuration Slicing Plugin 1.51 and earlier allows attackers to apply different slice configurations. (CVE-2021-21617)

- A cross-site request forgery (CSRF) vulnerability in Jenkins Claim Plugin 2.18.1 and earlier allows attackers to change claims. (CVE-2021-21620)

- Jenkins Support Core Plugin 2.72 and earlier provides the serialized user authentication as part of the 'About user (basic authentication details only)' information, which can include the session ID of the user creating the support bundle in some configurations. (CVE-2021-21621)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.


Upgrade Jenkins Enterprise or Jenkins Operations Center to version rev3, rev3, rev2 or later.

See Also

Plugin Details

Severity: High

ID: 155630

File Name: cloudbees_security_advisory_2021-02-24.nasl

Version: 1.2

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 11/19/2021

Updated: 11/22/2021

Dependencies: jenkins_detect.nasl, jenkins_win_installed.nbin, jenkins_nix_installed.nbin, macosx_jenkins_installed.nbin

Risk Information

CVSS Score Source: CVE-2021-21617


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cloudbees:jenkins

Required KB Items: installed_sw/Jenkins

Exploit Ease: No known exploits are available

Patch Publication Date: 2/24/2021

Vulnerability Publication Date: 2/24/2021

Reference Information

CVE: CVE-2021-21616, CVE-2021-21617, CVE-2021-21618, CVE-2021-21619, CVE-2021-21620, CVE-2021-21621, CVE-2021-21622