CVE-2021-31404

Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18

Severity Score

2.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.4.6 (Vaadin 14.0.0 through 14.4.6), 3.0.0 prior to 5.0.0 (Vaadin 15 prior to 18), and 5.0.0 through 5.0.2 (Vaadin 18.0.0 through 18.0.5) allows attacker to guess a security token via timing attack.

La comparación non-constant-time de tokens CSRF en el manejador de peticiones UIDL en com.vaadin:flow-server versiones 1.0.0 hasta 1.0.13 (Vaadin versiones 10.0.0 hasta 10.0.16), versiones 1.1.0 anteriores a 2.0.0 (Vaadin versiones 11 anteriores a 14), versiones 2.0.0 hasta 2.4.6 (Vaadin versiones 14.0.0 hasta 14.4.6), versiones 3.0.0 anteriores a 5.0.0 (Vaadin versiones 15 anteriores a 18) y versiones 5.0.0 hasta 5.0.2 (Vaadin versiones 18.0.0 hasta 18.0.5), permite al atacante adivinar un token de seguridad por medio de un ataque de sincronización

*Credits: This issue was discovered and responsibly reported by Xhelal Likaj.

CVSS Scores

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Local

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

2021-04-15 CVE Reserved
2021-04-23 CVE Published
2023-03-08 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-203: Observable Discrepancy
CWE-208: Observable Timing Discrepancy

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/vaadin/flow/pull/9875	2021-04-30

URL	Date	SRC
https://vaadin.com/security/cve-2021-31404	2021-04-30

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"				>= 1.0.0 < 1.0.14 Search vendor "Vaadin" for product "Flow" and version " >= 1.0.0 < 1.0.14"		-		Affected
Vaadin Search vendor "Vaadin"		Flow Search vendor "Vaadin" for product "Flow"				>= 1.1.0 < 2.0.0 Search vendor "Vaadin" for product "Flow" and version " >= 1.1.0 < 2.0.0"		-		Affected
Vaadin Search vendor "Vaadin"		Flow Search vendor "Vaadin" for product "Flow"				>= 2.0.0 < 2.4.7 Search vendor "Vaadin" for product "Flow" and version " >= 2.0.0 < 2.4.7"		-		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"		Flow Search vendor "Vaadin" for product "Flow"				>= 5.0.0 < 5.0.3 Search vendor "Vaadin" for product "Flow" and version " >= 5.0.0 < 5.0.3"		-		Affected
Vaadin Search vendor "Vaadin"		Vaadin Search vendor "Vaadin" for product "Vaadin"				>= 10.0.0 < 10.0.17 Search vendor "Vaadin" for product "Vaadin" and version " >= 10.0.0 < 10.0.17"		-		Affected
Vaadin Search vendor "Vaadin"		Vaadin Search vendor "Vaadin" for product "Vaadin"				>= 11.0.0 < 14.0.0 Search vendor "Vaadin" for product "Vaadin" and version " >= 11.0.0 < 14.0.0"		-		Affected
Vaadin Search vendor "Vaadin"		Vaadin Search vendor "Vaadin" for product "Vaadin"				>= 14.0.0 < 14.4.7 Search vendor "Vaadin" for product "Vaadin" and version " >= 14.0.0 < 14.4.7"		-		Affected
Vaadin Search vendor "Vaadin"		Vaadin Search vendor "Vaadin" for product "Vaadin"				>= 15.0.0 < 17.0.0 Search vendor "Vaadin" for product "Vaadin" and version " >= 15.0.0 < 17.0.0"		-		Affected
Vaadin Search vendor "Vaadin"		Vaadin Search vendor "Vaadin" for product "Vaadin"				>= 18.0.0 < 18.0.6 Search vendor "Vaadin" for product "Vaadin" and version " >= 18.0.0 < 18.0.6"		-		Affected