Vulnerability Details : CVE-2021-25836
Potential exploit
Cosmos Network Ethermint <= v0.4.0 is affected by cache lifecycle inconsistency in the EVM module. The bytecode set in a FAILED transaction wrongfully remains in memory(stateObject.code) and is further written to persistent store at the Endblock stage, which may be utilized to build honeypot contracts.
Products affected by CVE-2021-25836
- cpe:2.3:a:chainsafe:ethermint:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-25836
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-25836
| 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 |
References for CVE-2021-25836
-
https://github.com/cosmos/ethermint/issues/667#issuecomment-759284303
There may be bad data points in CommitStateDB when exec evm transaction with multi msgs · Issue #667 · cosmos/ethermint · GitHubExploit;Third Party Advisory
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