Description
BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 contains a login rate limit bypass vulnerability in LoginMiddleware.php that keys failed-login counters on case-sensitive usernames. Unauthenticated attackers can vary username casing against case-insensitive MySQL lookups to get extra attempts and brute-force passwords past the per-account lockout.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| blueprintue | blueprintue-self-hosted-edition | 4.2.0 – < 4.3.4 | 4.3.4 |
References
- GitHub Security Advisory (GHSA-773r-585g-6vc3) vendor-advisory
- https://github.com/blueprintue/blueprintue-self-hosted-edition/commit/bd4af38d2f7d499be23fc4106f93980a1348ddd7 patch
- https://github.com/blueprintue/blueprintue-self-hosted-edition/pull/267 patch issue-tracking
- blueprintue-self-hosted-edition v4.3.4 Release Notes release-notes
- https://github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.3/app/middlewares/LoginMiddleware.php#L119-L158 technical-description
- VulnCheck Advisory: BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 Login Rate Limit Bypass third-party-advisory