CVE-2020-36321

Directory traversal in development mode handler in Vaadin 14 and 15-17

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Improper URL validation in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.4.1 (Vaadin 14.0.0 through 14.4.2), and 3.0 prior to 5.0 (Vaadin 15 prior to 18) allows attacker to request arbitrary files stored outside of intended frontend resources folder.

Una comprobación incorrecta de URL en el controlador del modo de desarrollo en com.vaadin:flow-server versiones 2.0.0 hasta 2.4.1 (Vaadin versiones 14.0.0 hasta 14.4.2) y versiones 3.0 anteriores a 5.0 (Vaadin versiones 15 anteriores a 18), permiten al atacante pedir archivos arbitrarios almacenados fuera de la carpeta de recursos de la interfaz prevista

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-04-13 CVE Reserved
2021-04-23 CVE Published
2024-01-07 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/vaadin/flow/pull/9392	2021-05-05

URL	Date	SRC
https://vaadin.com/security/cve-2020-36321	2021-05-05

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Vaadin Search vendor "Vaadin"		Flow Search vendor "Vaadin" for product "Flow"				>= 2.0.0 < 2.4.2 Search vendor "Vaadin" for product "Flow" and version " >= 2.0.0 < 2.4.2"		-		Affected
Vaadin Search vendor "Vaadin"		Flow Search vendor "Vaadin" for product "Flow"				>= 3.0.0 < 5.0.0 Search vendor "Vaadin" for product "Flow" and version " >= 3.0.0 < 5.0.0"		-		Affected
Vaadin Search vendor "Vaadin"		Vaadin Search vendor "Vaadin" for product "Vaadin"				>= 14.0.0 < 14.4.3 Search vendor "Vaadin" for product "Vaadin" and version " >= 14.0.0 < 14.4.3"		-		Affected
Vaadin Search vendor "Vaadin"		Vaadin Search vendor "Vaadin" for product "Vaadin"				>= 15.0.0 < 18.0.0 Search vendor "Vaadin" for product "Vaadin" and version " >= 15.0.0 < 18.0.0"		-		Affected