Description (CNA)
Ech0 before 4.4.3 contains a server-side request forgery vulnerability in the validateWebhookURL function (webhook_setting_service.go), which only validates literal IP addresses via net.ParseIP() and fails to reject hostnames that DNS-resolve to private or internal IPs (e.g., 169.254.169.254.nip.io). An attacker with admin privileges can create a webhook with such a hostname to bypass validation and cause the server to make requests to internal services, cloud metadata endpoints, and private network resources. The issue is fixed in 4.4.3.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| lin-snow / Ech0 | affected 0 before 4.4.3; unaffected 4.4.3 |
CWE
CWE-918
References
- https://github.com/lin-snow/Ech0/security/advisories/GHSA-r2x7-427f-rq69
- https://www.vulncheck.com/advisories/ech0-before-ssrf-via-dns-resolution-bypass
ADP enrichment
No English description supplied.