WebAuthn4J Spring Security Improper signature counter value handling
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.
Reporter
This issue was discovered by Michael Budnick (@mbudnick)
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | com.webauthn4j:webauthn4j-spring-security-core | < 0.9.1.RELEASE | 0.9.1.RELEASE |
References
- https://github.com/webauthn4j/webauthn4j-spring-security/security/advisories/GHSA-v9hx-v6vf-g36j
- https://nvd.nist.gov/vuln/detail/CVE-2023-45669
- https://github.com/webauthn4j/webauthn4j-spring-security/commit/129700d74d83f9b9a82bf88ebc63707e3cb0a725
- https://github.com/webauthn4j/webauthn4j-spring-security
- https://www.w3.org/TR/2021/REC-webauthn-2-20210408/#sctn-sign-counter
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N- Weakness (CWE)
CWE-287- Platform
- Java / Kotlin (Maven)
- Package
com.webauthn4j:webauthn4j-spring-security-core- Disclosed
- 17.10.2023
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - GHSA-v9hx-v6vf-g36j - CC BY 4.0
Vulnerability history: com.webauthn4j:webauthn4j-spring-security-core
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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