CVE-2021-25835

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2021-25835
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-02-08T18:15:13
  • Last Modified Date
  • 2021-02-12T14:08:59
Weakness Enumerations
CWE URL
CWE-294 http://cwe.mitre.org/data/definitions/294.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:chainsafe:ethermint:*:*:*:*:*:*:*:* 1 OR 0.4.0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://github.com/cosmos/ethermint/pull/692 Patch Third Party Advisory
https://github.com/cosmos/ethermint/issues/687 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-25835
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25835
History
Created Old Value New Value Data Type Notes
2022-05-10 07:23:30 Added to TrackCVE
2022-12-05 21:33:51 2021-02-08T18:15Z 2021-02-08T18:15:13 CVE Published Date updated
2022-12-05 21:33:51 2021-02-12T14:08:59 CVE Modified Date updated
2022-12-05 21:33:51 Analyzed Vulnerability Status updated