Panic during unmarshal of Hello Verify Request in github.com/pion/dtls/v2

github.com/pion/dtls Updated 02 Oct 2025

Summary

07/02/2023

Disclosed on

MODERATE

Severity

No i

Fix available

Moderate

Severity

5.9

CVSS Score

GHSA-4xgv-j62q-h3rj: Panic during unmarshal of Hello Verify Request in github.com/pion/dtls/v2. Affects github.com/pion/dtls versions < 1.5.4. No fix is published. How to fix ↓

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Background

The package github.com/pion/dtls/v2 is a Go library that provides support for Datagram Transport Layer Security (DTLS) protocol. DTLS is a variant of the Transport Layer Security (TLS) protocol that is designed to secure datagram-based applications. The pion/dtls/v2 package allows developers to implement DTLS functionality in their Go applications.

Vulnerability Detail

The vulnerability identified as GHSA-4xgv-j62q-h3rj in the github.com/pion/dtls/v2 package involves a panic during the unmarshalling of a hello verify request. This occurs when the unmarshalling process attempts to use a buffer that is too small, resulting in a crash of the program. This vulnerability can be exploited to cause a denial of service (DoS) attack. The severity of this vulnerability is rated as MODERATE with a CVSS score of 5.9.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no known workaround for this vulnerability. It is advised to upgrade to the fixed version.

Conclusion

In conclusion, the github.com/pion/dtls/v2 package is vulnerable to a panic during unmarshalling of a hello verify request. This vulnerability can be exploited to cause a denial of service attack. It is recommended to upgrade to version 2.2.4 to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.

See every vulnerability recorded for github.com/pion/dtls →