WebAuthn4J Spring Security provides Web Authentication specification support for Spring applications. Affected versions prior to 0.9.1.RELEASE are subject to improper signature counter-value handling. A flaw was found in webauthn4j-spring-security-core. When an authenticator returns an incremented signature counter value during authentication, webauthn4j-spring-security-core does not properly persist the value, which means cloned authenticator detection does not work. An attacker who cloned a valid authenticator in some way can use the cloned authenticator without being detected. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CWE-287 - Improper Authentication
Improper (or broken) authentication attacks are widespread, and have accounted for many of the worst data breaches in recent years. Improper authentication attacks are a class of vulnerabilities where an attacker impersonates a legitimate user by exploiting weaknesses in either session management or credential management to gain access to the user’s account. This can result in disclosure of sensitive information, and can lead to system compromise, theft, identity theft, and fraud.