Starknet apps, including dYdX, can cause MPC wallet exploit, says wallet developer.
Certain multisignature wallets can be exploited by Web3 apps that use the Starknet protocol, according to a March 9 press release provided to Cointelegraph by Multi-Party Computation wallet developer Safeheron. The vulnerability affects MPC wallets that interact with Starknet apps such as dYdX. According to the press release, Safeheron is working with app developers to patch the vulnerability.
Instead, these wallets work by generating “shards” of a private key, with each shard being held by one signer. These shards have to be joined together off-chain in order to produce a signature. Because of this difference, MPC wallets can have lower gas fees than other types of multisigs and can be blockchain agnostic, according to the docs.than single signature wallets, since an attacker can’t generally hack them unless they compromise more than one device.
“The interaction between MPC wallets and dYdX or similar dApps [decentralized applications] that use signature-derived keys undermines the principle of self-custody for MPC wallet platforms. Customers may be able to bypass pre-defined transaction policies, and employees who have left the organization may still retain the capability to operate the dApp.”
Cointelegraph has attempted to contact dYdX, but has been unable to get a response before publication.
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