Jenkins Enterprise and Operations Center < / / Multiple Vulnerabilities (CloudBees Security Advisory 2021-01-13)

high Nessus Plugin ID 155715


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

- Jenkins 2.274 and earlier, LTS 2.263.1 and earlier allows attackers with permission to create or configure various objects to inject crafted content into Old Data Monitor that results in the instantiation of potentially unsafe objects once discarded by an administrator. (CVE-2021-21604)

- Jenkins 2.274 and earlier, LTS 2.263.1 and earlier allows users with Agent/Configure permission to choose agent names that cause Jenkins to override the global `config.xml` file. (CVE-2021-21605)

- Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not correctly match requested URLs to the list of always accessible paths, allowing attackers without Overall/Read permission to access some URLs as if they did have Overall/Read permission. (CVE-2021-21609)

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: 155715

File Name: cloudbees_security_advisory_2021-01-13.nasl

Version: 1.3

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 11/29/2021

Updated: 4/11/2022

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

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

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

CVSS Score Source: CVE-2021-21605


Risk Factor: High

Base Score: 8

Temporal Score: 7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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: 1/13/2021

Vulnerability Publication Date: 1/13/2021

Reference Information

CVE: CVE-2021-21602, CVE-2021-21603, CVE-2021-21604, CVE-2021-21605, CVE-2021-21606, CVE-2021-21607, CVE-2021-21608, CVE-2021-21609, CVE-2021-21610, CVE-2021-21611, CVE-2021-21612, CVE-2021-21613, CVE-2021-21614