Description (CNA)
Simple Machines Forum 2.1 prior to commit 4bf35cf and 3.0 prior to commit b4d23df contains a server-side request forgery vulnerability in the image proxy that allows authenticated attackers to trigger internal HTTP requests by embedding attacker-controlled URLs in BBCode image tags, which the proxy fetches without validating resolved destination IPs against private address ranges, loopback, or link-local addresses. Attackers can leverage SMF's automatic HMAC signature generation for any embedded image URL to obtain valid signed proxy requests targeting internal services such as cloud instance metadata endpoints, internal web applications, and container network services.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| SimpleMachines / SMF | affected 2.1.0 before 2.1.7; unaffected 4bf35cf9e45573a5f55a6f52995086c1da89c096; unaffected 3.0.0; affected b4d23dfd74a511587c605f9d294cefc3a75b4b26 |
CWE
CWE-918
References
- https://github.com/SimpleMachines/SMF/commit/4bf35cf9e45573a5f55a6f52995086c1da89c096
- https://github.com/SimpleMachines/SMF/commit/b4d23dfd74a511587c605f9d294cefc3a75b4b26
- https://www.vulncheck.com/advisories/simple-machines-forum-ssrf-via-image-proxy
ADP enrichment
No English description supplied.
No references supplied.