CVE-2021-25835

Cosmos Network Ethermint <= v0.4.0 is affected by a cross-chain transaction replay vulnerability in the EVM module. Since ethermint uses the same chainIDEpoch and signature schemes with ethereum for compatibility, a verified signature in ethereum is still valid in ethermint with the same msg content and chainIDEpoch, which enables "cross-chain transaction replay" attack.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 40%
VendorProductVersion
chainsafeethermint
𝑥
≤ 0.4.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/cosmos/ethermint/issues/687
https://github.com/cosmos/ethermint/pull/692
https://github.com/cosmos/ethermint/issues/687
https://github.com/cosmos/ethermint/pull/692