CVE-2023-3724

CVSS 3.1 Score 8.8 of 10 (high)

Details

Published Jul 17, 2023
Updated: Jul 28, 2023
CWE ID 20
CWE ID 295

Summary

CVE-2023-3724 is a vulnerability affecting TLS 1.3 clients using wolfSSL. When connecting to a malicious server, if no Pre-Shared Key (PSK) or Key Share Extension (KSE) are provided, a predictable buffer is used for Input Keying Material (IKM), compromising the session master secret key. This allows eavesdropping and potential manipulation of message contents in the session. The vulnerability does not impact client validation of connected servers or expose private key information. wolfSSL advises users to update their wolfSSL version to mitigate this issue and ensure secure TLS 1.3 sessions.

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