{
  "id": "CVE-2021-25835",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-02-08T18:15:13.803",
  "lastModified": "2021-02-12T14:08:59.123",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Cosmos Network Ethermint  versiones anteriores e incluyendo a v0.4.0 est\u00e1 afectado por una vulnerabilidad de reproducci\u00f3n de transacciones entre cadenas en el m\u00f3dulo EVM.&#xa0;Dado que ethermint usa los mismos esquemas de chainIDEpoch y firma con ethereum para la compatibilidad, una firma verificada en ethereum sigue siendo v\u00e1lida en ethermint con el mismo contenido de msg y chainIDEpoch, que permite el ataque de \"cross-chain transaction replay\""
    }
  ],
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        "type": "Primary",
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          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
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      }
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          "accessVector": "NETWORK",
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          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
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        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-294"
        }
      ]
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  ],
  "configurations": [
    {
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          "operator": "OR",
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          "cpeMatch": [
            {
              "vulnerable": true,
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  "references": [
    {
      "url": "https://github.com/cosmos/ethermint/issues/687",
      "source": "cve@mitre.org",
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        "Third Party Advisory"
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}