The Arbitrum Security Council proactively addressed potential technical issues with a network upgrade to Arbitrum Nitro v3.2.0. This upgrade, completed for Arbitrum One, Nova, and Sepolia networks, strengthens the network’s stability and prevents potential problems.
Here’s what you need to know:
- No impact on funds: This upgrade did not affect any user funds and everything remains secure.
- Improved network stability: The upgrade addresses three areas:
- A potential mispricing issue in Arbitrum Stylus that could have led to a denial-of-service (DDoS) attack.
- A vulnerability that could have allowed malicious contracts to crash nodes.
- An error causing overcharging of Stylus contracts for certain operations.
- Transparency and accountability: A thorough post-mortem report and a Transparency Report explaining the details and justification for this Emergency Action are forthcoming. An audit report of the upgrade was shared privately with the Security Council, and will soon be published for the community.
Are you running an Arbitrum Node?
- Node operators: If you haven’t already, upgrade your nodes to Arbitrum Nitro v3.2.0 for continued operation. You can find it here: https://github.com/OffchainLabs/nitro/releases/tag/v3.2.0
- Validator nodes: Upgrade to v3.2.1 available at https://github.com/OffchainLabs/nitro/releases/tag/v3.2.1
Emergency Action Details
Enacting the Emergency Action involved 3 separate transactions initiated by the Security Council.
- Ethereum Transaction Hash (Txhash) Details | Etherscan
- Arbitrum Nova Transaction Hash (Txhash) Details | Arbitrum Nova
- Arbitrum One Transaction Hash (Txhash) Details | Arbitrum One
What is the Security Council?
The Security Council, established by the ArbitrumDAO Constitution, acts to protect the network. This council of 12 members safeguards the network by executing necessary upgrades and actions in response to security concerns. They only take such Emergency Actions with a 9-of-12 member majority vote and only in critical situations that could significantly compromise the network. Following an Emergency Action, they provide a detailed explanation for the community.
We remain committed to providing a robust and secure network for all users. If you have any questions, please don’t hesitate to reach out to the Arbitrum community channels.
