Jenkins Enterprise and Operations Center < / 2.303.3.3 Multiple Vulnerabilities (CloudBees Security Advisory 2021-11-04)

critical Nessus Plugin ID 155631


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 2.277.x prior to, or 2.x prior to 2.303.3.3. It is, therefore, affected by multiple vulnerabilities, including the following:

- Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier. (CVE-2021-21690)

- Creating symbolic links is possible without the 'symlink' agent-to-controller access control permission in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier. (CVE-2021-21691)

- FilePath#renameTo and FilePath#moveAllChildrenTo in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier only check 'read' agent-to-controller access permission on the source path, instead of 'delete'.

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, 2.303.3.3, or later.

See Also

Plugin Details

Severity: Critical

ID: 155631

File Name: cloudbees_security_advisory_2021-11-04.nasl

Version: 1.3

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 11/19/2021

Updated: 4/7/2022

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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

CVSS Score Source: CVE-2021-21696


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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: 11/4/2021

Vulnerability Publication Date: 11/4/2021

Reference Information

CVE: CVE-2021-21685, CVE-2021-21686, CVE-2021-21687, CVE-2021-21688, CVE-2021-21689, CVE-2021-21690, CVE-2021-21691, CVE-2021-21692, CVE-2021-21693, CVE-2021-21694, CVE-2021-21695, CVE-2021-21696, CVE-2021-21697, CVE-2021-21698