CVE-2021-31404 - CVE House
Back to Database
Status published Medium CVE-2021-31404

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

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-31404

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • This issue was discovered and responsibly reported by Xhelal Likaj.

References

More from Vaadin

View All →
CVE-2022-29567
Possible information disclosure inside TreeGrid component with default data provider
Medium 5.7
CVE-2021-33611
Reflected cross-site scripting in vaadin-menu-bar webjar resources in Vaadin 14
Medium 6.1
CVE-2021-33609
Denial of service in DataCommunicator class in Vaadin 8
Medium 4.3
CVE-2021-33605
Unauthorized property update in CheckboxGroup component in Vaadin 12-14 and 15-20
Medium 4.3
CVE-2021-33604
Reflected cross-site scripting in development mode handler in Vaadin 14, 15-19
Low 2.5

Affected Vendor

Affected Software

Vaadin, flow-server
Vulnerable Versions:
10.0.0, 1.0.0

Timeline

Official Publish: April 23rd, 2021
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Weaknesses (CWE)

CWE-208

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.