CVE-2021-32813
Summary
| CVE | CVE-2021-32813 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-08-03 23:15:00 UTC |
| Updated | 2021-08-11 23:40:00 UTC |
| Description | Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.4.13, there exists a potential header vulnerability in Traefik's handling of the Connection header. Active exploitation of this issue is unlikely, as it requires that a removed header would lead to a privilege escalation, however, the Traefik team has addressed this issue to prevent any potential abuse. If one has a chain of Traefik middlewares, and one of them sets a request header, then sending a request with a certain Connection header will cause it to be removed before the request is sent. In this case, the backend does not see the request header. A patch is available in version 2.4.13. There are no known workarounds aside from upgrading. |
Risk And Classification
Problem Types: CWE-913
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Release v2.4.13 · traefik/traefik · GitHub | MISC | github.com | |
| Drop Headers via Malicious Connection Header · Advisory · traefik/traefik · GitHub | CONFIRM | github.com | |
| Remove hop-by-hop headers defined in connection header before some middleware by ldez · Pull Request #8319 · traefik/traefik · GitHub | MISC | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 981386 Go (go) Security Update for github.com/traefik/traefik (GHSA-m697-4v8f-55qg)