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OpenSSL 4.1.0: What’s new, what’s removed, and what’s still broken

Help Net Security

Overview

The OpenSSL project has released version 4.1.0, which introduces support for DTLS 1.3, a protocol variant designed for datagram transport over networks like UDP. However, this new version comes with four known bugs in the DTLS code, which could lead to applications misinterpreting connection data. Developers using DTLS 1.3 or the recently added DTLS support in OpenSSL’s SSL listener API are particularly at risk. This situation is concerning as it could affect the reliability and security of applications that rely on these protocols, potentially leading to data miscommunication. Users and developers should stay alert for updates or patches that address these issues.

Key Takeaways

  • Affected Systems: OpenSSL 4.1.0, DTLS 1.3
  • Action Required: Developers are advised to monitor for future patches or updates that address the identified bugs in DTLS.
  • Timeline: Newly disclosed

Original Article Summary

The OpenSSL project released version 4.1.0, adding support for DTLS 1.3 and listing four known bugs in the DTLS code that ships with it. DTLS is the variant of TLS built for datagram transports such as UDP, and version 1.3 is defined in RFC 9147. The bugs fall on developers who adopt DTLS 1.3 or the DTLS support newly added to OpenSSL’s SSL listener API. Two of them can make an application misread a connection’s … More → The post OpenSSL 4.1.0: What’s new, what’s removed, and what’s still broken appeared first on Help Net Security.

Impact

OpenSSL 4.1.0, DTLS 1.3

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Newly disclosed

Remediation

Developers are advised to monitor for future patches or updates that address the identified bugs in DTLS.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

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