CVE-2021-21670

jenkins: improper permission checks allow canceling queue items and aborting builds

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Jenkins 2.299 and earlier, LTS 2.289.1 and earlier allows users to cancel queue items and abort builds of jobs for which they have Item/Cancel permission even when they do not have Item/Read permission.

Jenkins versiones 2.299 y anteriores, versiones LTS 2.289.1 y anteriores, permiten a usuarios cancelar elementos de la cola y abortar construcciones de trabajos para los que tienen permiso de Elemento/Cancelación incluso cuando no tienen permiso de Elemento/Lectura

Incorrect Authorization vulnerability was found in Jenkins. Users with Item/Cancel permission are able to cancel queue items and abort builds of jobs even when they do not have Item/Read permission.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-04 CVE Reserved
2021-06-30 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-863: Incorrect Authorization

CAPEC

References (4)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2021/06/30/1	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2278	2023-10-25
https://access.redhat.com/security/cve/CVE-2021-21670	2021-10-19
https://bugzilla.redhat.com/show_bug.cgi?id=2007749	2021-10-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Jenkins Search vendor "Jenkins"		Jenkins Search vendor "Jenkins" for product "Jenkins"				< 2.289.2 Search vendor "Jenkins" for product "Jenkins" and version " < 2.289.2"		lts		Affected
Jenkins Search vendor "Jenkins"		Jenkins Search vendor "Jenkins" for product "Jenkins"				< 2.300 Search vendor "Jenkins" for product "Jenkins" and version " < 2.300"		-		Affected