Description
Fider before 0.38.0 contains a server-side request forgery vulnerability due to a time-of-check time-of-use gap in URL validation for webhooks and custom OAuth provider endpoints. Administrators controlling DNS can perform DNS rebinding attacks to make the Fider server send requests to internal services or cloud metadata endpoints.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| getfider | fider | < 0.38.0 | 0.38.0 |
References
- GitHub Security Advisory (GHSA-whx4-hxwq-qgjh) vendor-advisory
- https://github.com/getfider/fider/commit/45f5627b9fd15b912fb9092635c863fb4c91dd69 patch
- https://github.com/getfider/fider/blob/v0.37.0/app/pkg/validate/general.go technical-description
- https://github.com/getfider/fider/blob/v0.37.0/app/services/httpclient/httpclient.go technical-description
- fider v0.38.0 Release Notes release-notes
- https://github.com/getfider/fider product
- VulnCheck Advisory: Fider before 0.38.0 SSRF via DNS rebinding in webhook validation third-party-advisory