CVE-2019-19962 : Vulnerability Insights and Analysis
Learn about CVE-2019-19962, a vulnerability in wolfSSL versions prior to 4.3.0 allowing fault injection in RSA cryptography. Find mitigation steps and preventive measures here.
Versions of wolfSSL prior to 4.3.0 have a vulnerability in the way calls to wc_SignatureGenerateHash are handled, which can result in the injection of faults in the RSA cryptography process.
Understanding CVE-2019-19962
wolfSSL before version 4.3.0 mishandles calls to wc_SignatureGenerateHash, leading to fault injection in RSA cryptography.
What is CVE-2019-19962?
CVE-2019-19962 is a vulnerability in versions of wolfSSL prior to 4.3.0 that allows for the injection of faults in the RSA cryptography process due to mishandling of calls to wc_SignatureGenerateHash.
The Impact of CVE-2019-19962
- The vulnerability can be exploited to inject faults in the RSA cryptography process, potentially leading to security breaches and unauthorized access.
Technical Details of CVE-2019-19962
wolfSSL before version 4.3.0 has a specific vulnerability that affects its cryptographic process.
Vulnerability Description
The vulnerability arises from the mishandling of calls to wc_SignatureGenerateHash, allowing for the injection of faults in the RSA cryptography process.
Affected Systems and Versions
- Product: wolfSSL
- Vendor: wolfSSL
- Versions Affected: Prior to 4.3.0
Exploitation Mechanism
- Attackers can exploit this vulnerability by manipulating calls to wc_SignatureGenerateHash, injecting faults into the RSA cryptography process.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2019-19962.
Immediate Steps to Take
- Update wolfSSL to version 4.3.0 or later to mitigate the vulnerability.
- Monitor for any unusual activity that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions to prevent known vulnerabilities.
- Conduct security assessments and audits to identify and address potential weaknesses in cryptographic processes.
Patching and Updates
- Apply patches and updates provided by wolfSSL promptly to ensure the security of the cryptographic processes.