Vulnerability Description
Frontier is an Ethereum compatibility layer for Substrate. Prior to commit d3beddc6911a559a3ecc9b3f08e153dbe37a8658, the worst case weight was always accounted as the block weight for all cases. In case of large EVM gas refunds, this can lead to block spamming attacks -- the adversary can construct blocks with transactions that have large amount of refunds or unused gases with reverts, and as a result inflate up the chain gas prices. The impact of this issue is limited in that the spamming attack would still be costly for any adversary, and it has no ability to alter any chain state. This issue has been patched in commit d3beddc6911a559a3ecc9b3f08e153dbe37a8658. There are no known workarounds.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Parity | Frontier | < 2022-09-12 |
Related Weaknesses (CWE)
References
- https://github.com/paritytech/frontier/pull/851PatchThird Party Advisory
- https://github.com/paritytech/frontier/security/advisories/GHSA-v57h-6hmh-g2p4Third Party Advisory
- https://github.com/paritytech/frontier/pull/851PatchThird Party Advisory
- https://github.com/paritytech/frontier/security/advisories/GHSA-v57h-6hmh-g2p4Third Party Advisory
FAQ
What is CVE-2022-39242?
CVE-2022-39242 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Frontier is an Ethereum compatibility layer for Substrate. Prior to commit d3beddc6911a559a3ecc9b3f08e153dbe37a8658, the worst case weight was always accounted as the block weight for all cases. In ca...
How severe is CVE-2022-39242?
CVE-2022-39242 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-39242?
Check the references section above for vendor advisories and patch information. Affected products include: Parity Frontier.