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CVE

CVE-2025-70955

A Stack Overflow vulnerability was discovered in the TON Virtual Machine (TVM) before v2024.10.
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CVE

CVE-2025-70955

A Stack Overflow vulnerability was discovered in the TON Virtual Machine (TVM) before v2024.10.

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://gist.github.com/Lucian-code233/25b0a13be569db9160340d9ecd2fdf0d, https://github.com/ton-blockchain/ton/releases/tag/v2024.10#:~:text=krigga%20%28emulator%29%2C-%2CArayz%2C-%40%20TonBit%20%28LS%20security, https://mp.weixin.qq.com/s/wy2ea6udkNZzIsp1K2LEOQ, https://github.com/ton-blockchain/ton/commit/b5734d2e30b9c93cfdacb4ea37c9ebdf11ca5d49#diff-17eca9db515992a081522236bf9bad767fac171044f7c00c20bf740f4206b3de

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00025%
EPSS Percentile
0.06614%
Introduced Version
0
Fix Available
b5734d2e30b9c93cfdacb4ea37c9ebdf11ca5d49

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