CVE-2022-42961: ECDSA key disclosure

October 15, 2022 (updated October 20, 2022)

An issue was discovered in wolfSSL before 5.5.0. A fault injection attack on RAM via Rowhammer leads to ECDSA key disclosure. Users performing signing operations with private ECC keys, such as in server-side TLS connections, might leak faulty ECC signatures. These signatures can be processed via an advanced technique for ECDSA key recovery. (In 5.5.0 and later, WOLFSSL_CHECK_SIG_FAULTS can be used to address the vulnerability.)

References

github.com/wolfSSL/wolfssl/releases/tag/v5.5.0-stable
nvd.nist.gov/vuln/detail/CVE-2022-42961

Code Behaviors & Features

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