CVE-2019-15947 : Vulnerability Insights and Analysis

Bitcoin Core 0.18.0 has a vulnerability where wallet.dat data is stored without encryption in the memory of bitcoin-qt. In the event of a crash, a core file can be generated. If not handled carefully, an attacker can use a grep "6231 0500" command to reconstruct the user's wallet.dat file, which includes their private keys.

Understanding CVE-2019-15947

Bitcoin Core 0.18.0 vulnerability related to unencrypted storage of wallet.dat data in memory.

What is CVE-2019-15947?

Bitcoin Core 0.18.0 vulnerability allows attackers to reconstruct wallet.dat files and access private keys.

The Impact of CVE-2019-15947

Attackers can exploit the vulnerability to access users' private keys stored in the wallet.dat file.
Core files generated during crashes can be used by attackers to reconstruct sensitive data.

Technical Details of CVE-2019-15947

Bitcoin Core 0.18.0 vulnerability technical insights.

Vulnerability Description

Wallet.dat data stored unencrypted in memory of bitcoin-qt.
Attacker can reconstruct user's wallet.dat file and private keys using a specific command.

Affected Systems and Versions

Product: Bitcoin Core 0.18.0
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attacker can use a grep "6231 0500" command to reconstruct the user's wallet.dat file.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-15947.

Immediate Steps to Take

Upgrade to a patched version that addresses the vulnerability.
Encrypt sensitive data stored in memory to prevent unauthorized access.

Long-Term Security Practices

Regularly update Bitcoin Core software to the latest secure version.
Implement secure coding practices to prevent memory-related vulnerabilities.

Patching and Updates

Apply patches released by Bitcoin Core to fix the vulnerability and enhance security.