VDB
Sign up
MEDIUM4.8

GHSA-v9hx-v6vf-g36j

WebAuthn4J Spring Security Improper signature counter value handling

Quick fix

GHSA-v9hx-v6vf-g36j — com.webauthn4j:webauthn4j-spring-security-core: upgrade to the fixed version with the command below.

# pom.xml: bump <version>0.9.1.RELEASE</version> for com.webauthn4j:webauthn4j-spring-security-core

Details

Improper signature counter value handling

### Impact

A flaw was found in webauthn4j-spring-security-core. When an authneticator 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 valid authenticator in some way can use the cloned authenticator without being detected.

### Patches

Please upgrade to `com.webauthn4j:webauthn4j-spring-security-core:0.9.1.RELEASE`

### References

For more details about WebAuthn signature counters, see [WebAuthn specification 6.1.1. Signature Counter Considerations](https://www.w3.org/TR/2021/REC-webauthn-2-20210408/#sctn-sign-counter).

### Reporter

This issue was discovered by Michael Budnick (@mbudnick)

Are you affected?

Enter the version of the package you're using.

Affected packages

Maven/com.webauthn4j:webauthn4j-spring-security-core
Introduced in: 0Fixed in: 0.9.1.RELEASE
Fix# pom.xml: bump <version>0.9.1.RELEASE</version> for com.webauthn4j:webauthn4j-spring-security-core

References