A bug in Frontier's MODEXP precompile implementation can cause an integer underflow in certain conditions. This will cause a node crash for debug builds. For release builds (and production WebAssembly binaries), the impact is limited as it can only cause a normal EVM out-of-gas. It is recommended that you apply the patch as soon as possible.
If you do not use MODEXP precompile in your runtime, then you are not impacted.
Patches are applied in PR #549.
None.
Patch PR: #549
Thanks to SR-Labs for discovering the security vulnerability, and thanks to PureStake team for the patches.
If you have any questions or comments about this advisory: * Open an issue in the Frontier repo
{ "nvd_published_at": "2022-01-14T17:15:00Z", "cwe_ids": [ "CWE-191" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2022-01-14T19:58:51Z" }