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.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/cosmos/ethermint/issues/687	Third Party Advisory
https://github.com/cosmos/ethermint/pull/692	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:chainsafe:ethermint:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-02-08 18:15

Updated : 2021-02-12 14:08

NVD link : CVE-2021-25835

Mitre link : CVE-2021-25835

CVE.ORG link : CVE-2021-25835

JSON object : View

Products Affected

chainsafe

ethermint

CWE

CWE-294

Authentication Bypass by Capture-replay

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