A vulnerable node, if configured to use high verbosity logging, can be made to crash when handling specially crafted p2p messages sent from an attacker node.
The following PR addresses the problem: https://github.com/ethereum/go-ethereum/pull/24507
Aside from applying the PR linked above, setting loglevel to default level (INFO
) makes the node not vulnerable to this attack.
This bug was reported by nrv
via [email protected], who has gracefully requested that the bounty rewards be donated to Médecins sans frontières.
If you have any questions or comments about this advisory: