CVE-2021-21642

jenkins-2-plugins/config-file-provider: Does not configure its XML parser to prevent XML external entity (XXE) attacks.

Severity Score

8.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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

Jenkins Config File Provider Plugin versiones 3.7.0 y anteriores, no configuran su analizador XML para evitar ataques de tipo XML external entity (XXE)

A flaw was found in the config-file-provider Jenkins plugin. The plugin XML parser wasn't configure to prevent XML external entity (XXE) attacks. An attacker with the ability to define Maven configuration files can use this vulnerability to prepare a crafted configuration file that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

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
2021-04-21 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-611: Improper Restriction of XML External Entity Reference

CAPEC

References (4)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2021/04/21/2	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.jenkins.io/security/advisory/2021-04-21/#SECURITY-2204	2023-10-25
https://access.redhat.com/security/cve/CVE-2021-21642	2021-06-30
https://bugzilla.redhat.com/show_bug.cgi?id=1952146	2021-06-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Jenkins Search vendor "Jenkins"		Config File Provider Search vendor "Jenkins" for product "Config File Provider"				<= 3.7.0 Search vendor "Jenkins" for product "Config File Provider" and version " <= 3.7.0"		jenkins		Affected