Products
web-auth/webauthn-lib
- 4.9.0
Source
security-advisories@github.com
Tags
CVE-2024-39912 details
Last Modified : July 15, 2024, 8:15 p.m.
Description
web-auth/webauthn-lib is an open source set of PHP libraries and a Symfony bundle to allow developers to integrate that authentication mechanism into their web applications. The ProfileBasedRequestOptionsBuilder method returns allowedCredentials without any credentials if no username was found. When WebAuthn is used as the first or only authentication method, an attacker can enumerate usernames based on the absence of the `allowedCredentials` property in the assertion options response. This allows enumeration of valid or invalid usernames. By knowing which usernames are valid, attackers can focus their efforts on a smaller set of potential targets, increasing the efficiency and likelihood of successful attacks. This issue has been addressed in version 4.9.0 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS Score
| 1 | 2 | 3 | 4 | 5.3 | 6 | 7 | 8 | 9 | 10 |
|---|
Weakness
| Weakness | Name | Description |
|---|---|---|
| CWE-204 | Observable Response Discrepancy | The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere. |
CVSS Data
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Base Score
5.3
Exploitability Score
3.9
Impact Score
1.4
Base Severity
MEDIUM
Vector String : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
| URL | Source |
|---|---|
| https://github.com/web-auth/webauthn-framework/commit/64de11f6cddc71e56c76e0cc4573bf94d02be045 | security-advisories@github.com |
| https://github.com/web-auth/webauthn-framework/security/advisories/GHSA-875x-g8p7-5w27 | security-advisories@github.com |