An integer overflow in Nethermind Juno before v.12.05 within the Sierra bytecode decompression logic within the "cairo-lang-starknet-classes" library could allow remote attackers to trigger an infinite loop (and high CPU usage) by submitting a malicious Declare v2/v3 transaction. This results in a denial-of-service condition for affected Starknet full-node implementations.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| github.com/NethermindEth/juno(Go) | 0 | 0.12.5 | N/A |
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