CVE Vulnerability

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

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

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

Configuration 1

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

Published : 2021-02-08 06:15

Updated : 2021-02-12 02:08

NVD link : CVE-2021-25835

Mitre link : CVE-2021-25835

Products Affected
No products.
CWE
CWE-294

Authentication Bypass by Capture-replay