Vulnerability Details : 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.
Products affected by CVE-2021-25835
- cpe:2.3:a:chainsafe:ethermint:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-25835
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-25835
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-25835
-
A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-25835
-
https://github.com/cosmos/ethermint/pull/692
Fix nonce issue for replay attack by araskachoi · Pull Request #692 · cosmos/ethermint · GitHubPatch;Third Party Advisory
-
https://github.com/cosmos/ethermint/issues/687
Replay Tx on another Chain · Issue #687 · cosmos/ethermint · GitHubThird Party Advisory
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