Advisory Weakness Curation

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

Information Exposure Through Discrepancy A non-constant-time comparison of CSRF tokens in UIDL request handler in `com.vaadin:vaadin-server` allows attacker to guess a security token via timing attack.

Observable Discrepancy 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

Information Exposure Through Discrepancy Non-constant-time comparison of CSRF tokens in UIDL request handler in `com.vaadin:vaadin-server` allows attacker to guess a security token via timing attack