Policy Bypass and Oracle-Based Decryption in Mbed TLS by ARM

CVE-2021-45451

Summary

In Mbed TLS versions prior to 3.1.0, a flaw exists in the psa_aead_generate_nonce function that allows an untrusted application to bypass security policies or exploit oracle-based decryption opportunities when the output buffer is located in memory regions accessible to the application. This weakness can potentially lead to unauthorized access to sensitive data, emphasizing the importance of upgrading to the latest version to mitigate risks.

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