CVE-2019-14859 : Exploit Details and Defense Strategies
Learn about CVE-2019-14859 affecting python-ecdsa versions before 0.13.3, allowing acceptance of manipulated signatures and potential transaction fraud. Find mitigation steps and update recommendations.
Python-ecdsa versions before 0.13.3 had a vulnerability allowing acceptance of malformed signatures, potentially leading to transaction manipulation by attackers.
Understanding CVE-2019-14859
This CVE pertains to a flaw in python-ecdsa versions before 0.13.3 that could enable the acceptance of manipulated signatures.
What is CVE-2019-14859?
- Python-ecdsa versions prior to 0.13.3 had a vulnerability that allowed the acceptance of malformed signatures.
- This flaw could lead to the manipulation of signatures, enabling attackers to create false transactions.
The Impact of CVE-2019-14859
- CVSS Score: 7.4 (High)
- Severity: High
- Attack Vector: Network
- Confidentiality Impact: High
- Integrity Impact: High
- Attack Complexity: High
- Exploiting this vulnerability could result in the creation of false transactions using manipulated signatures.
Technical Details of CVE-2019-14859
Python-ecdsa vulnerability details and affected systems.
Vulnerability Description
- The flaw in python-ecdsa versions before 0.13.3 allowed the acceptance of DER encoded signatures without proper verification.
- This flaw made signatures susceptible to manipulation, enabling the creation of false transactions.
Affected Systems and Versions
- Product: python-ecdsa
- Vendor: Red Hat
- Versions Affected: All python-ecdsa versions before 0.13.3
Exploitation Mechanism
- Attackers could exploit this vulnerability by using manipulated signatures to generate false transactions.
Mitigation and Prevention
Protective measures and steps to mitigate the CVE-2019-14859 vulnerability.
Immediate Steps to Take
- Update python-ecdsa to version 0.13.3 or later to mitigate the vulnerability.
- Monitor for any suspicious activity related to signature verification.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions to prevent known vulnerabilities.
- Implement secure coding practices to avoid similar signature manipulation issues.
Patching and Updates
- Apply patches and updates provided by Red Hat to address the vulnerability.