CVE-2021-43576

Jenkins pom2config XML External Entity Processing Information Disclosure Vulnerability

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Jenkins pom2config Plugin 1.2 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks, allowing attackers with Overall/Read and Item/Read permissions to have Jenkins parse a crafted XML file that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery.

El plugin Jenkins pom2config versiones 1.2 y anteriores, no configura su analizador XML para prevenir ataques de entidad externa XML (XXE), permitiendo a atacantes con permisos Overall/Read y Item/Read hacer que Jenkins analice un archivo XML diseñado que usa entidades externas para la extracción de secretos del controlador Jenkins o una vulnerabilidad de tipo server-side request forgeryr

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Jenkins pom2config. Authentication is required to exploit this vulnerability.
The specific flaw exists within the Pom2Config class. Due to the improper restriction of XML External Entity (XXE) references, a crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of the service account.

*Credits: Adith Sudhakar

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-11-11 CVE Reserved
2021-11-12 CVE Published
2024-08-04 CVE Updated
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-611: Improper Restriction of XML External Entity Reference

CAPEC

References (3)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2021/11/12/1	Mailing List
https://www.zerodayinitiative.com/advisories/ZDI-21-1314	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2415	2023-11-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Jenkins Search vendor "Jenkins"		Pom2config Search vendor "Jenkins" for product "Pom2config"				<= 1.2 Search vendor "Jenkins" for product "Pom2config" and version " <= 1.2"		jenkins		Affected