Description (CNA)
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, mod_verto's WebSocket frame loop intercepts a #-prefixed speed-test protocol (#SPU / #SPB / #SPE) before any authentication check. The declared payload size in #SPU was parsed with atoi() and only rejected non-positive values, so an unauthenticated peer could request up to INT_MAX bytes. The server then wrote roughly size * 10 bytes back during the download phase, on the order of 20 GB per request, yielding strong outbound bandwidth amplification from a short request. This issue has been patched in version 1.11.1.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| signalwire / freeswitch | affected < 1.11.1 |
CWE
CWE-400
References
- https://github.com/signalwire/freeswitch/security/advisories/GHSA-p3gx-p2w7-wp35
- https://github.com/signalwire/freeswitch/releases/tag/v1.11.1
ADP enrichment
No English description supplied.
No references supplied.