Mozilla · Firefox · CVE-2017-5388
**Name of the Vulnerable Software and Affected Versions**
Firefox versions prior to 51
**Description**
A denial of service attack can be performed by utilizing a STUN server in conjunction with multiple `webkitRTCPeerConnection` objects, which can send large STUN packets in a short period due to the lack of rate limiting on e10s systems.
**Recommendations**
For versions prior to 51, update to version 51 or later to resolve the issue.