CVE-2025-70955
HighSummary
Wykryto podatność typu Stack Overflow w TON Virtual Machine (TVM) przed wersją v2024.10. Problem wynika z niewłaściwego zarządzania instrukcjami vmstate i skoków kontynuacji, co umożliwia ciągłe dynamiczne wywołania ogonowe.
Risk Assessment
Atakujący może wykorzystać tę podatność, tworząc inteligentny kontrakt z głęboko zagnieżdżoną logiką skoków, co prowadzi do wyczerpania przestrzeni stosu procesu gospodarza i awarii węzła walidatora. To skutkuje odmową usługi (DoS) dla sieci blockchain TON.
Recommendation
Zaleca się aktualizację TON Virtual Machine do wersji v2024.10 lub nowszej, aby usunąć tę podatność oraz monitorowanie inteligentnych kontraktów pod kątem złożonej logiki skoków.
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Original NVD description (English source)
A Stack Overflow vulnerability was discovered in the TON Virtual Machine (TVM) before v2024.10. The vulnerability stems from the improper handling of vmstate and continuation jump instructions, which allow for continuous dynamic tail calls. An attacker can exploit this by crafting a smart contract with deeply nested jump logic. Even within permissible gas limits, this nested execution exhausts the host process's stack space, causing the validator node to crash. This results in a Denial of Service (DoS) for the TON blockchain network.