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  5. GHSA-8wcc-m6j2-qxvm

GHSA-8wcc-m6j2-qxvm: Transaction decoding may result in a stack overflow or resource exhaustion

December 16, 2024 (updated October 31, 2025)

ASA-2024-0012 When decoding a maliciously formed packet with a deeply-nested structure, it may be possible for a stack overflow to occur and result in a network halt. This was addressed by adding a recursion limit while decoding the packet. ASA-2024-0013 Nested messages in a transaction can consume exponential cpu and memory on UnpackAny calls. Themax_tx_bytes sets a limit for external TX but is not applied for internal messages emitted by wasm contracts or a malicious validator block. This may result in a node crashing due to resource exhaustion. This was addressed by adding additional validation to prevent this condition.

References

  • github.com/advisories/GHSA-8wcc-m6j2-qxvm
  • github.com/cosmos/cosmos-sdk
  • github.com/cosmos/cosmos-sdk/commit/c6b1bdcd5628e3e425a3f02881d3c7db1d7af653
  • github.com/cosmos/cosmos-sdk/releases/tag/v0.47.15
  • github.com/cosmos/cosmos-sdk/releases/tag/v0.50.11
  • github.com/cosmos/cosmos-sdk/security/advisories/GHSA-8wcc-m6j2-qxvm

Code Behaviors & Features

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Affected versions

All versions before 0.47.15, all versions starting from 0.50.0-alpha.0 before 0.50.11

Fixed versions

  • 0.50.11
  • 0.47.15

Solution

Upgrade to versions 0.47.15, 0.50.11 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-400: Uncontrolled Resource Consumption
  • CWE-674: Uncontrolled Recursion

Source file

go/github.com/cosmos/cosmos-sdk/GHSA-8wcc-m6j2-qxvm.yml

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