Description (CNA)
Mongoose is an embedded web server and network library. Prior to version 7.22, an on-path network attacker with a wildcard certificate for a parent domain can impersonate deeper subdomains to a client using the built-in TLS stack. The mg_tls_verify_cert_san() and mg_tls_verify_cert_cn() functions in src/tls_builtin.c call mg_match(), whose wildcard can cross DNS label boundaries, so a pattern such as *.example.com can match foo.bar.example.com. The resulting hostname verification bypass permits interception and modification of TLS traffic. This issue is fixed in version 7.22.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| cesanta / mongoose | affected < 7.22 |
CWE
CWE-295
References
- https://github.com/cesanta/mongoose/security/advisories/GHSA-jp6g-796f-39vp
- https://github.com/cesanta/mongoose/pull/3611
- https://github.com/cesanta/mongoose/commit/a9df523f76f43a38bd53b4232b9cfd4c16869e71
- https://github.com/cesanta/mongoose/releases/tag/7.22
ADP enrichment
No English description supplied.