Description (CNA)
Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.8, there is a potential vulnerability in Traefik managing STARTTLS requests. An unauthenticated client can bypass Traefik entrypoint respondingTimeouts.readTimeout by sending the 8-byte Postgres SSLRequest (STARTTLS) prelude and then stalling, causing connections to remain open indefinitely, leading to a denial of service. This vulnerability is fixed in 3.6.8.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| traefik / traefik | affected < 3.6.8 |
CWE
CWE-400
References
- https://github.com/traefik/traefik/security/advisories/GHSA-89p3-4642-cr2w
- https://github.com/traefik/traefik/commit/31e566e9f1d7888ccb6fbc18bfed427203c35678
- https://github.com/traefik/traefik/releases/tag/v3.6.8
ADP enrichment
No English description supplied.
No references supplied.
A flaw was found in Traefik, an HTTP reverse proxy and load balancer. An unauthenticated client can exploit this vulnerability by sending a specific 8-byte Postgres SSLRequest (STARTTLS) prelude and then intentionally delaying further communication. This action bypasses Traefik's configured read timeouts, causing connections to remain open indefinitely. The primary consequence is a Denial of Service, as the server's resources become exhausted by these persistent, non-responsive connections.