CVE-2017-12842 : Vulnerability Insights and Analysis

Bitcoin Core before version 0.14 is susceptible to a vulnerability that allows an attacker to create a valid SPV proof for a payment to a user with an SPV wallet, even if the payment never occurred. The exploit requires a substantial investment exceeding one million dollars and is most relevant in scenarios where an autonomous system relies solely on SPV proof for high-value transactions.

Understanding CVE-2017-12842

Bitcoin Core vulnerability enabling the creation of fake SPV proofs for payments, potentially leading to financial exploitation.

What is CVE-2017-12842?

Vulnerability in Bitcoin Core pre-0.14 allows attackers to fabricate SPV proofs for non-existent payments.
Requires a significant investment exceeding one million dollars to execute.
Particularly impactful in systems relying solely on SPV proof for high-value transactions.

The Impact of CVE-2017-12842

Attackers can deceive SPV wallet users into believing they received payments that never occurred.
Potential financial losses and disruption of transactions in affected systems.

Technical Details of CVE-2017-12842

Bitcoin Core vulnerability specifics and affected systems.

Vulnerability Description

Bitcoin Core pre-0.14 vulnerability enables the creation of fake SPV proofs for payments.

Affected Systems and Versions

Bitcoin Core versions before 0.14 are vulnerable to this exploit.

Exploitation Mechanism

Attackers can exploit the vulnerability to generate seemingly legitimate SPV proofs for non-existent payments.

Mitigation and Prevention

Protective measures to address CVE-2017-12842.

Immediate Steps to Take

Upgrade Bitcoin Core to version 0.14 or newer to mitigate the vulnerability.
Exercise caution in high-value transactions relying solely on SPV proofs.

Long-Term Security Practices

Implement multi-factor authentication for enhanced security.
Regularly monitor and update Bitcoin Core software to prevent vulnerabilities.

Patching and Updates

Stay informed about security patches and updates for Bitcoin Core to address known vulnerabilities.