CVE-2021-31404

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

State: Published
Severity: 4.0 Medium
Published: Apr 23, 2021
Updated: Sep 16, 2024
Reserved: Apr 15, 2021

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	4.0 Medium	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N	Vaadin

Weaknesses

CWE-208 Information Exposure Through Timing Discrepancy

Affected Products

Product	Versions
VaadinVaadin	10.0.0 and laterAffectedfrom 11.0.0Affectedfrom 14.0.0Not affectedfrom 14.0.0Affectedfrom 15.0.0Affectedfrom 18.0.0Not affectedfrom 18.0.0Affected
flow-serverVaadin	1.0.0 and laterAffectedfrom 1.1.0Affectedfrom 2.0.0Not affectedfrom 2.0.0Affectedfrom 3.0.0Affectedfrom 5.0.0Not affectedfrom 5.0.0Affected

References

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