Timing side channel vulnerability in UIDL request handler in Vaadin 7 and 8

Moderate

fluorumlabs published GHSA-75xc-qvxh-27f8

Apr 16, 2021

Package

com.vaadin:vaadin-bom, com.vaadin:vaadin-server (Maven)

Affected versions

>=7.0.0, <=7.7.23, >=8.0.0, <=8.12.2

Patched versions

7.7.24, 8.12.3

Description

Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:vaadin-server versions 7.0.0 through 7.7.23 (Vaadin 7.0.0 through 7.7.23), and 8.0.0 through 8.12.2 (Vaadin 8.0.0 through 8.12.2) allows attacker to guess a security token via timing attack

https://vaadin.com/security/cve-2021-31403

Severity

Moderate

4.0

/ 10

CVSS base metrics

Attack vector

Local

Attack complexity

High

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N