Over the past couple of weeks, the Ethereum community has been the goal of a sustained assault. The attacker(s) have been very artful in finding vulnerabilities within the shopper implementations in addition to the protocol specification.
Whereas the latest patches have led to an general elevated resiliency within the shopper implementations, the assaults have additionally demonstrated {that a} lower-level change to the EVM pricing mannequin is required.
For a lot of customers, essentially the most seen consequence might be that they’re having difficulties getting transactions included in blocks, and full nodes are dealing with reminiscence limitations in managing the bloated state.
That is our technique to deal with these points:
- As a brief measure to attenuate the results of the newest assault, we suggest all miners to decrease the gaslimit to 500K gasoline.
- A tough-fork based mostly on EIP 150 version 1c can be implement at block
2457000[see below]. It will reprice sure operations to correspond higher to the underlying computational complexity. - A second hard-fork will observe shortly after, aimed toward reverting the present “state-bloat” launched by the assaults. This second fork will serve to take away accounts that are empty; missing code, stability, storage and nonce == 0.
We have now carried out the adjustments required within the shoppers and are at the moment extending and including checks in an effort to stop the introduction of consensus-breaking vulnerabilities.
And as a reminder, the Ethereum Bug Bounty is open and contains the brand new hardfork-implementations.
EDIT: Fork block has been moved to 2463000 to be able to accommodate much more testing.
