gsd-2018-0495
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
Aliases
Aliases



{
  "GSD": {
    "alias": "CVE-2018-0495",
    "description": "Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.",
    "id": "GSD-2018-0495",
    "references": [
      "https://www.suse.com/security/cve/CVE-2018-0495.html",
      "https://www.debian.org/security/2018/dsa-4231",
      "https://access.redhat.com/errata/RHSA-2020:1461",
      "https://access.redhat.com/errata/RHSA-2020:1345",
      "https://access.redhat.com/errata/RHSA-2020:1267",
      "https://access.redhat.com/errata/RHBA-2020:0547",
      "https://access.redhat.com/errata/RHSA-2019:2237",
      "https://access.redhat.com/errata/RHSA-2019:1543",
      "https://access.redhat.com/errata/RHSA-2019:1297",
      "https://access.redhat.com/errata/RHSA-2019:1296",
      "https://access.redhat.com/errata/RHSA-2018:3221",
      "https://ubuntu.com/security/CVE-2018-0495",
      "https://advisories.mageia.org/CVE-2018-0495.html",
      "https://security.archlinux.org/CVE-2018-0495",
      "https://alas.aws.amazon.com/cve/html/CVE-2018-0495.html",
      "https://linux.oracle.com/cve/CVE-2018-0495.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2018-0495"
      ],
      "details": "Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.",
      "id": "GSD-2018-0495",
      "modified": "2023-12-13T01:22:24.912091Z",
      "schema_version": "1.4.0"
    }
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 1.9,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 3.4,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.0"
          },
          "exploitabilityScore": 1.0,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2020-08-24T17:37Z",
      "publishedDate": "2018-06-13T23:29Z"
    }
  }
}


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