CVE-2023-37192
📋 TL;DR
This vulnerability in Bitcoin Core allows attackers to manipulate memory to change transaction destination addresses, potentially redirecting Bitcoin payments to attacker-controlled wallets. It affects users running vulnerable versions of Bitcoin Core software. The exploit requires local access or ability to manipulate the application's memory space.
💻 Affected Systems
- Bitcoin Core
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete loss of Bitcoin funds from redirected transactions to attacker wallets with no recovery possible.
Likely Case
Targeted attacks against high-value Bitcoin Core users resulting in financial loss from redirected transactions.
If Mitigated
No impact if patched version is used or if proper memory protection controls are enforced.
🎯 Exploit Status
Exploitation requires sophisticated memory manipulation techniques and understanding of Bitcoin Core's internal memory structures.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Bitcoin Core v23.0 or later
Vendor Advisory: https://bitcoin.org/en/bitcoin-core/
Restart Required: Yes
Instructions:
1. Backup your wallet.dat file
2. Download Bitcoin Core v23.0 or later from bitcoin.org
3. Stop Bitcoin Core
4. Install the new version
5. Restart Bitcoin Core
🔧 Temporary Workarounds
Memory Protection Controls
allImplement strict memory protection and access controls on systems running Bitcoin Core
🧯 If You Can't Patch
- Run Bitcoin Core in isolated environment with minimal privileges
- Monitor transaction destinations carefully before confirming
🔍 How to Verify
Check if Vulnerable:
Check Bitcoin Core version: Help -> About Bitcoin Core or bitcoin-qt --versionCheck Version:
bitcoin-qt --version or check Help -> About Bitcoin Core in GUIVerify Fix Applied:
Verify version is v23.0 or later and check for any memory manipulation attempts in system logs📡 Detection & Monitoring
Log Indicators:
- Unexpected memory access patterns
- Transaction destination changes after confirmation
Network Indicators:
- Transactions sent to unexpected addresses
SIEM Query:
Search for Bitcoin Core process memory manipulation events or unexpected transaction destinations🔗 References
- https://bitcoin.org/en/bitcoin-core/
- https://satoshihunter1.blogspot.com/2023/06/the-bitcoin-app-is-vulnerable-to-hackers.html
- https://www.youtube.com/watch?v=oEl4M1oZim0
- https://bitcoin.org/en/bitcoin-core/
- https://satoshihunter1.blogspot.com/2023/06/the-bitcoin-app-is-vulnerable-to-hackers.html
- https://www.youtube.com/watch?v=oEl4M1oZim0
