CyberRota Analysis
AI-GeneratedThe ZenHive mpp library is vulnerable due to improper validation of the gas limit in the payment method, allowing unauthenticated remote clients to exploit this flaw and drain the fee-payer wallet, leading to denial of service for legitimate users. Attackers can repeatedly submit transactions with insufficient gas limits, causing the fee-payer to incur costs without completing the intended operations. Organizations utilizing the affected versions of the mpp library (from 0.2.0 to before 0.6.0) should prioritize remediation to protect their fee-payer wallets and ensure service availability for legitimate clients.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet, resulting in denial of service for legitimate clients. When the mpp Elixir library is configured as fee payer (fee_payer: true), the MPP.Methods.Tempo payment method co-signs and broadcasts a client-supplied EVM transaction without first validating that the client-supplied gas_limit is sufficient to complete the intended call. A malicious client can submit a signed transferWithMemo transaction with gas_limit deliberately set just below the amount required for successful execution. The server co-signs the transaction and broadcasts it via rpc_broadcast_sync. The transaction runs out of gas during EVM execution and reverts, but the fee-payer wallet is still charged for the burned gas while the client pays nothing and receives no resource. Repeated requests from one or more malicious clients drain the fee-payer wallet at near-zero cost to the attacker, ultimately preventing the server from sponsoring gas for legitimate payment requests. The wait_for_confirmation = false (optimistic) path is also affected: it invokes simulate_payment_call via eth_call, but that simulation omits the gas parameter and therefore does not catch out-of-gas conditions. This issue affects mpp: from 0.2.0 before 0.6.0.