GHSA-74xm-qj29-cq8p

In github.com/pion/webrtc, failed DTLS certificate verification doesn't stop data channel communication

Source: GitHub Advisory Database (reviewed) Moderate CVE-2021-28681

Packages

Ecosystem	Package	Affected	Fixed in
Go	github.com/pion/webrtc/v3	< 3.0.15	3.0.15

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact Data channel communication was incorrectly allowed with users who have failed DTLS certificate verification. This attack requires * Attacker knows the ICE password. * Only take place during PeerConnection handshake. This attack can be detected by monitoring `PeerConnectionState` in all versions of Pion WebRTC. ### Patches Users should upgrade to v3.0.15. The exact patch is https://github.com/pion/webrtc/commit/545613dcdeb5dedb01cce94175f40bcbe045df2e ### Workarounds Users should listen for when `PeerConnectionState` changes to `PeerConnectionStateFailed`. When it enters this state users should not continue using the PeerConnection. ### For more information If you have any questions or comments about this advisory: * Open an issue in https://github.com/pion/webrtc * Email us at [[email protected]](mailto:[email protected]) Thank you to https://github.com/Gaukas for discovering this.

References

External links from the advisory. They lead to third-party sites.