{
  "id": "CVE-2018-12435",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2018-06-15T02:29:00.377",
  "lastModified": "2018-08-22T19:57:41.990",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host."
    },
    {
      "lang": "es",
      "value": "Botan versi\u00f3n 2.5.0 hasta 2.6.0 anterior a 2.7.0, permite un ataque de canal lateral de memoria cach\u00e9 en firmas ECDSA, tambi\u00e9n se conoce como Problema del Retorno de N\u00famero Oculto o ROHNP, relacionado con los archivos  dsa/dsa.cpp, ec_group/ec_group.cpp, y ecdsa/ecdsa.cpp. Para descubrir una clave ECDSA, el atacante requiere acceso a la m\u00e1quina local o a una m\u00e1quina virtual diferente en el mismo host f\u00edsico."
    }
  ],
  "metrics": {
    "cvssMetricV30": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 1.4,
        "impactScore": 4.0
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N",
          "accessVector": "LOCAL",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 1.9
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 3.4,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "2.5.0",
              "versionEndIncluding": "2.7.0",
              "matchCriteriaId": "416ED13A-040B-4ED0-ACAD-9EC53C2EBE6C"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://botan.randombit.net/security.html",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848e3",
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}