Description (CNA)
Static Web Server (SWS) is a production-ready web server suitable for static web files or assets. In versions 2.1.0 through 2.40.1, a timing-based username enumeration vulnerability in Basic Authentication allows attackers to identify valid users by exploiting early responses for invalid usernames, enabling targeted brute-force or credential-stuffing attacks. SWS checks whether a username exists before verifying the password, causing valid usernames to follow a slower code path (e.g., bcrypt hashing) while invalid usernames receive an immediate 401 response. This timing discrepancy allows attackers to enumerate valid accounts by measuring response-time differences. This issue has been fixed in version 2.41.0.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| static-web-server / static-web-server | affected >= 2.1.0, < 2.41.0 |
CWE
CWE-204
References
- https://github.com/static-web-server/static-web-server/security/advisories/GHSA-qhp6-635j-x7r2
- https://github.com/static-web-server/static-web-server/commit/7bf0fd425eb10dac9bf9ef5febce12c4dd039ce1
ADP enrichment
No English description supplied.
No references supplied.