Flame through 2.4.0 contains an improper restriction of excessive authentication attempts vulnerability in the POST /api/auth login endpoint that allows unauthenticated attackers to brute-force the admin password. Attackers can submit unlimited password guesses without rate limiting, attempt counters, lockouts, or delays to gain full administrator access and modify application configuration.
Weakness
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.
Potential Mitigations
Common protection mechanisms include:
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator. [REF-45]
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/16.html
- https://cwe.mitre.org/data/definitions/49.html
- https://cwe.mitre.org/data/definitions/560.html
- https://cwe.mitre.org/data/definitions/565.html
- https://cwe.mitre.org/data/definitions/600.html
- https://cwe.mitre.org/data/definitions/652.html
- https://cwe.mitre.org/data/definitions/653.html
References
- https://github.com/pawelmalak/flame
- https://github.com/pawelmalak/flame/blob/v2.4.0/.docker/Dockerfile#L28
- https://github.com/pawelmalak/flame/blob/v2.4.0/controllers/auth/login.js#L11-L22
- https://github.com/pawelmalak/flame/blob/v2.4.0/routes/auth.js#L7
- https://github.com/pawelmalak/flame/issues/494
- https://www.vulncheck.com/advisories/flame-through-2.4.0-brute-force-attack-via-login-endpoint