CVE-2023-45130
📋 TL;DR
This vulnerability in Frontier (Substrate's Ethereum compatibility layer) allows attackers to craft contracts with excessive storage values and trigger SUICIDE opcodes, causing parachains to stall by exceeding relay chain PoV size limits. It primarily affects parachains using Frontier, with standalone chains facing less severe performance impacts.
💻 Affected Systems
- Frontier (Substrate Ethereum compatibility layer)
📦 What is this software?
Frontier by Parity
⚠️ Risk & Real-World Impact
Worst Case
Parachain stalls completely when PoV size exceeds relay chain limits, blocking all transactions including critical XCM transactions that cannot be skipped.
Likely Case
Parachain performance degradation and potential stalling when attackers exploit this with large storage contracts.
If Mitigated
Normal operation with proper patching; standalone chains experience minimal impact even without patching.
🎯 Exploit Status
Attack requires ability to deploy contracts and execute SUICIDE opcode, but the exploit technique is straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Commit aea528198b3b226e0d20cce878551fd4c0e3d5d0
Vendor Advisory: https://github.com/paritytech/frontier/security/advisories/GHSA-gc88-2gvv-gp3v
Restart Required: Yes
Instructions:
1. Update Frontier to commit aea528198b3b226e0d20cce878551fd4c0e3d5d0 or later. 2. For parachains: Perform emergency runtime upgrade immediately. 3. For standalone chains: Perform normal runtime upgrade as soon as possible.
🔧 Temporary Workarounds
No known workarounds
allThe vendor advisory states there are no known workarounds for this vulnerability.
🧯 If You Can't Patch
- Monitor for unusual contract deployment patterns with large storage usage
- Implement rate limiting or additional validation for contract deployment and SUICIDE operations
🔍 How to Verify
Check if Vulnerable:
Check Frontier version/commit hash; if earlier than aea528198b3b226e0d20cce878551fd4c0e3d5d0, the system is vulnerable.Check Version:
Check Frontier source code or runtime version for commit hash aea528198b3b226e0d20cce878551fd4c0e3d5d0Verify Fix Applied:
Verify Frontier is running commit aea528198b3b226e0d20cce878551fd4c0e3d5d0 or later and runtime upgrade has been applied.📡 Detection & Monitoring
Log Indicators:
- Unusually large storage deletion operations
- PoV size limit warnings or errors
- Contract SUICIDE operations on contracts with extensive storage
Network Indicators:
- Sudden parachain stalling or transaction failures
- Increased block production times
SIEM Query:
Search for 'SUICIDE opcode execution' combined with 'storage::remove_prefix' or 'storage::clear_prefix' operations in blockchain logs🔗 References
- https://github.com/paritytech/frontier/commit/aea528198b3b226e0d20cce878551fd4c0e3d5d0
- https://github.com/paritytech/frontier/pull/1212
- https://github.com/paritytech/frontier/security/advisories/GHSA-gc88-2gvv-gp3v
- https://github.com/paritytech/frontier/commit/aea528198b3b226e0d20cce878551fd4c0e3d5d0
- https://github.com/paritytech/frontier/pull/1212
- https://github.com/paritytech/frontier/security/advisories/GHSA-gc88-2gvv-gp3v
