{
  "cveId": "CVE-2020-1971",
  "url": "https://patchblox.com/security/cve/CVE-2020-1971",
  "summary": "CVE-2020-1971 is fixed in 7 products on 1 platform, first by libssl1.0.0 1.0.2n-1ubuntu5.5, released December 7, 2020. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "OpenSSL: CVE-2020-1971 EDIPARTYNAME NULL pointer de-reference",
  "description": "OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.\n\nSecurity Fix(es):\n\n* openssl: EDIPARTYNAME NULL pointer de-reference (CVE-2020-1971)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* Reject certificates with explicit EC parameters in strict mode (BZ#1891541)\n\n* Add FIPS selftest for HKDF, SSKDF, SSHKDF, and TLS12PRF; add DH_compute_key KAT to DH selftest (BZ#1891542)",
  "published": "2020-12-07T16:00:00Z",
  "severity": "Important",
  "cvss": 5.9,
  "epss": 0.06994,
  "epssPercentile": 0.94195,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1971",
  "fixes": [
    {
      "platform": "linux",
      "product": "libssl1.0.0",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.0.2n-1ubuntu5.5",
      "fix": "libssl1.0.0 1.0.2n-1ubuntu5.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libssl1.0.0-1.0.2n-1ubuntu5.5",
      "released": "2020-12-07T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libssl1.1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.1.1-1ubuntu2.1~18.04.7",
      "fix": "libssl1.1 1.1.1-1ubuntu2.1~18.04.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libssl1.1-1.1.1-1ubuntu2.1-18.04.7",
      "released": "2020-12-07T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libssl1.1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.1.1f-1ubuntu2.1",
      "fix": "libssl1.1 1.1.1f-1ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libssl1.1-1.1.1f-1ubuntu2.1",
      "released": "2020-12-07T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1g-12.el8_3",
      "fix": "RHSA-2020:5476",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-5476",
      "released": "2020-12-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.1.1-1ubuntu2.1~18.04.7",
      "fix": "openssl 1.1.1-1ubuntu2.1~18.04.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-openssl-1.1.1-1ubuntu2.1-18.04.7",
      "released": "2020-12-07T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.1.1f-1ubuntu2.1",
      "fix": "openssl 1.1.1f-1ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-openssl-1.1.1f-1ubuntu2.1",
      "released": "2020-12-07T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "ol 8",
      "fixedVersion": "1:1.1.1g-12.el8_3",
      "fix": "ELSA-2020-5476",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-5476",
      "released": "2020-12-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1g-12.el8_3",
      "fix": "RHSA-2020:5476",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-5476",
      "released": "2020-12-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "ol 8",
      "fixedVersion": "1:1.1.1g-12.el8_3",
      "fix": "ELSA-2020-5476",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-5476",
      "released": "2020-12-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1g-12.el8_3",
      "fix": "RHSA-2020:5476",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-5476",
      "released": "2020-12-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "ol 8",
      "fixedVersion": "1:1.1.1g-12.el8_3",
      "fix": "ELSA-2020-5476",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-5476",
      "released": "2020-12-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1g-12.el8_3",
      "fix": "RHSA-2020:5476",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-5476",
      "released": "2020-12-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "ol 8",
      "fixedVersion": "1:1.1.1g-12.el8_3",
      "fix": "ELSA-2020-5476",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-5476",
      "released": "2020-12-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl1.0",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.0.2n-1ubuntu5.5",
      "fix": "openssl1.0 1.0.2n-1ubuntu5.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-openssl1.0-1.0.2n-1ubuntu5.5",
      "released": "2020-12-07T16:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}