CVE-2021-31406

MEDIUM4.0EPSS 0.05%

Timing side channel vulnerability in endpoint request handler in Vaadin 15-19

Published: 4/19/2021Modified: 11/8/2023

Description

Non-constant-time comparison of CSRF tokens in endpoint request handler in `com.vaadin:flow-server` versions 3.0.0 through 5.0.3 (Vaadin 15.0.0 through 18.0.6), and com.vaadin:fusion-endpoint version 6.0.0 (Vaadin 19.0.0) allows attacker to guess a security token for Fusion endpoints via timing attack. - https://vaadin.com/security/cve-2021-31406

Affected packages (1)

Maven/com.vaadin:flow-server>= 3.0.0, < 5.0.4

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM4.0	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

References (4)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-31406
WEBhttps://github.com/vaadin/flow/pull/10157
WEBhttps://github.com/vaadin/flow/security/advisories/GHSA-p7jq-v8jp-j424
WEBhttps://vaadin.com/security/cve-2021-31406