Denial of service in go-ethereum due to CVE-2020-28362

Summary

### Impact Versions of Geth built with Go `<1.15.5` or `<1.14.12` are most likely affected by a critical DoS-related security vulnerability. The golang team has registered the underlying flaw as ‘CVE-2020-28362’. We recommend all users to rebuild (ideally `v1.9.24`) with Go `1.15.5` or `1.14.12`, to avoid node crashes. Alternatively, if you are running binaries distributed via one of our official channels, we’re going to release `v1.9.24` ourselves built with Go `1.15.5`. ### Patches This is not an issue in go-ethereum, rebuilding an older version with Go `1.15.5` or `1.14.12` will suffice to address the vulnerability. ### Workarounds Rebuilding with Go `1.15.5` or `1.14.12` will suffice to address the vulnerability. ### References - https://blog.ethereum.org/2020/11/12/geth_security_release/ - https://groups.google.com/g/golang-announce/c/NpBGTTmKzpM ### For more information If you have any questions or comments about this advisory: * Open an issue in [go-ethereum](https://github.com/ethereum/go-ethereum) * Email us at [[email protected]](mailto:[email protected])