Jenkins Enterprise and Operations Center < / Multiple Vulnerabilities (CloudBees Security Advisory 2021-04-21)

high Nessus Plugin ID 155628


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 2.249.x prior to, or 2.x prior to It is, therefore, affected by multiple vulnerabilities, including the following:

- Jenkins Config File Provider Plugin 3.7.0 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks. (CVE-2021-21642)

- A cross-site request forgery (CSRF) vulnerability in Jenkins Config File Provider Plugin 3.7.0 and earlier allows attackers to delete configuration files corresponding to an attacker-specified ID. (CVE-2021-21644)

- Jenkins Templating Engine Plugin 2.1 and earlier does not protect its pipeline configurations using Script Security Plugin, allowing attackers with Job/Configure permission to execute arbitrary code in the context of the Jenkins controller JVM. (CVE-2021-21646)

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, or later.

See Also

Plugin Details

Severity: High

ID: 155628

File Name: cloudbees_security_advisory_2021-04-21.nasl

Version: 1.3

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 11/19/2021

Updated: 4/11/2022

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent, Nessus

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS Score Source: CVE-2021-21646


Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

Temporal Vector: CVSS:3.0/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: 4/21/2021

Vulnerability Publication Date: 4/21/2021

Reference Information

CVE: CVE-2021-21642, CVE-2021-21643, CVE-2021-21644, CVE-2021-21645, CVE-2021-21646, CVE-2021-21647