CVE-2020-2231

Jenkins 2.235.3 - 'X-Forwarded-For' Stored XSS

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Jenkins 2.251 and earlier, LTS 2.235.3 and earlier does not escape the remote address of the host starting a build via 'Trigger builds remotely', resulting in a stored cross-site scripting (XSS) vulnerability exploitable by users with Job/Configure permission or knowledge of the Authentication Token.

Jenkins versiones 2.251 y anteriores, versiones LTS 2.235.3 y anteriores, no escapa la dirección remota del host que inicia una compilación por medio de "Trigger builds remotely", resultando en una vulnerabilidad de tipo cross-site scripting (XSS) almacenado explotables por usuarios con permiso de Trabajo y Configuración o conocimiento del Token de Autenticación

A flaw was found in Jenkins versions prior to 2.251 and LTS 2.235.3. The remote address of hosts starting a build via 'Trigger builds remotely' are not properly escaped leading to a potential stored cross-site scripting (XSS) vulnerability exploitable by users with Job/Configure permission or knowledge of the authentication token. The highest threat from this vulnerability is to data confidentiality and integrity.

Jenkins versions 2.251 and below and LTS 2.235.3 and below suffer from a persistent cross site scripting vulnerability.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-05 CVE Reserved
2020-08-12 CVE Published
2020-12-14 First Exploit
2024-07-03 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (6)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2020/08/12/4	Mailing List

URL	Date	SRC
https://www.exploit-db.com/exploits/49244	2020-12-14
http://packetstormsecurity.com/files/160616/Jenkins-2.251-LTS-2.235.3-Cross-Site-Scripting.html	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://jenkins.io/security/advisory/2020-08-12/#SECURITY-1960	2023-11-02
https://access.redhat.com/security/cve/CVE-2020-2231	2020-10-22
https://bugzilla.redhat.com/show_bug.cgi?id=1875234	2020-10-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Jenkins Search vendor "Jenkins"		Jenkins Search vendor "Jenkins" for product "Jenkins"				<= 2.235.3 Search vendor "Jenkins" for product "Jenkins" and version " <= 2.235.3"		lts		Affected
Jenkins Search vendor "Jenkins"		Jenkins Search vendor "Jenkins" for product "Jenkins"				<= 2.251 Search vendor "Jenkins" for product "Jenkins" and version " <= 2.251"		-		Affected