CVE-2022-42961 Explained : Impact and Mitigation
Discover the impact of CVE-2022-42961 where a fault injection attack on RAM via Rowhammer in wolfSSL can lead to ECDSA key disclosure, affecting signing operations with private ECC keys.
An issue was discovered in wolfSSL before 5.5.0 where a fault injection attack on RAM via Rowhammer leads to ECDSA key disclosure. This can result in leakage of faulty ECC signatures when users perform signing operations with private ECC keys, such as in server-side TLS connections. The vulnerability can be addressed using WOLFSSL_CHECK_SIG_FAULTS feature in version 5.5.0 and later.
Understanding CVE-2022-42961
This section provides insights into the nature of the vulnerability and its impact.
What is CVE-2022-42961?
CVE-2022-42961 involves a fault injection attack on RAM in wolfSSL, potentially leading to the disclosure of ECDSA keys during signing operations with private ECC keys.
The Impact of CVE-2022-42961
The impact of this vulnerability includes the potential leakage of faulty ECC signatures, which can be exploited to recover ECDSA keys through advanced techniques.
Technical Details of CVE-2022-42961
Delve deeper into the technical aspects of the vulnerability, including affected systems and exploitation methods.
Vulnerability Description
The vulnerability in wolfSSL allows attackers to perform a fault injection attack on RAM via Rowhammer, leading to the exposure of ECDSA keys during signing operations.
Affected Systems and Versions
All versions of wolfSSL prior to 5.5.0 are affected by this vulnerability.
Exploitation Mechanism
By leveraging the Rowhammer technique, attackers can induce faults in RAM to disclose ECDSA keys during private ECC key signing operations.
Mitigation and Prevention
Explore the steps to mitigate and prevent the exploitation of CVE-2022-42961.
Immediate Steps to Take
Users should update wolfSSL to version 5.5.0 or later, where the WOLFSSL_CHECK_SIG_FAULTS feature can be used to address the vulnerability.
Long-Term Security Practices
Implement secure coding practices, conduct regular security audits, and stay informed about security updates and patches.
Patching and Updates
Regularly check for security updates from wolfSSL and apply patches promptly to ensure protection against known vulnerabilities.