CVE-2019-20786: Improper Authentication

June 29, 2021

handleIncomingPacket in conn.go in Pion DTLS before 1.5.2 lacks a check for application data with epoch 0, which allows remote attackers to inject arbitrary unencrypted data after handshake completion.

References

github.com/advisories/GHSA-7gfg-6934-mqq2
github.com/pion/dtls/commit/fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0
github.com/pion/dtls/compare/v1.5.1...v1.5.2
nvd.nist.gov/vuln/detail/CVE-2019-20786

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