Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Chainsafe | Ethermint | <= 0.4.0 |
Related Weaknesses (CWE)
References
- https://github.com/cosmos/ethermint/issues/687Third Party Advisory
- https://github.com/cosmos/ethermint/pull/692PatchThird Party Advisory
- https://github.com/cosmos/ethermint/issues/687Third Party Advisory
- https://github.com/cosmos/ethermint/pull/692PatchThird Party Advisory
FAQ
What is CVE-2021-25835?
CVE-2021-25835 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 c...
How severe is CVE-2021-25835?
CVE-2021-25835 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-25835?
Check the references section above for vendor advisories and patch information. Affected products include: Chainsafe Ethermint.