CVE-2021-25836 — HIGH (7.5)

Q: How severe is CVE-2021-25836?

CVE-2021-25836 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-25836?

Check the references section above for vendor advisories and patch information. Affected products include: Chainsafe Ethermint.

Vulnerability Description

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.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Chainsafe	Ethermint	<= 0.4.0

References

https://github.com/cosmos/ethermint/issues/667#issuecomment-759284303ExploitThird Party Advisory
https://github.com/cosmos/ethermint/issues/667#issuecomment-759284303ExploitThird Party Advisory

FAQ

What is CVE-2021-25836?

CVE-2021-25836 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 furthe...

How severe is CVE-2021-25836?

CVE-2021-25836 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-2021-25836?

Check the references section above for vendor advisories and patch information. Affected products include: Chainsafe Ethermint.