Auth bypass in Webauthn4j Spring Security
CVE-2023-45669
WebAuthn4J Spring Security provides Web Authentication specification support for Spring applications. Affected versions are subject to improper signature counter value handling. 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. This issue has been addressed in version `0.9.1.RELEASE`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerability class: Broken Authentication
EPSS: 0.005 (41.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Webauthn4j Spring_security
- Webauthn4j Webauthn4j-spring-security — versions < 0.9.1.RELEASE
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Technical Description, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-45669?
- CVE-2023-45669 is a medium-severity vulnerability in Webauthn4j Spring Security, classified under Improper Authentication. CVSS score: 4.8/10. Published 2023-10-16.
- How severe is CVE-2023-45669?
- Medium severity. CVSS v3 base score is 4.8 out of 10.