usn-4745-1
Vulnerability from osv_ubuntu
Published
2021-02-23 19:33
Modified
2026-06-01 07:03
Summary
openssl vulnerabilities
Details

David Benjamin discovered that OpenSSL incorrectly handled comparing certificates containing a EDIPartyName name type. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2020-1971)

Tavis Ormandy discovered that OpenSSL incorrectly handled parsing issuer fields. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2021-23841)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-1971",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-23841",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libssl1.0.0",
            "binary_version": "1.0.1f-1ubuntu2.27+esm2"
          },
          {
            "binary_name": "openssl",
            "binary_version": "1.0.1f-1ubuntu2.27+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.27+esm2?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.1f-1ubuntu2.27+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.1e-3ubuntu1",
        "1.0.1e-4ubuntu1",
        "1.0.1e-4ubuntu2",
        "1.0.1e-4ubuntu3",
        "1.0.1e-4ubuntu4",
        "1.0.1f-1ubuntu1",
        "1.0.1f-1ubuntu2",
        "1.0.1f-1ubuntu2.1",
        "1.0.1f-1ubuntu2.2",
        "1.0.1f-1ubuntu2.3",
        "1.0.1f-1ubuntu2.4",
        "1.0.1f-1ubuntu2.5",
        "1.0.1f-1ubuntu2.7",
        "1.0.1f-1ubuntu2.8",
        "1.0.1f-1ubuntu2.11",
        "1.0.1f-1ubuntu2.12",
        "1.0.1f-1ubuntu2.15",
        "1.0.1f-1ubuntu2.16",
        "1.0.1f-1ubuntu2.17",
        "1.0.1f-1ubuntu2.18",
        "1.0.1f-1ubuntu2.19",
        "1.0.1f-1ubuntu2.20",
        "1.0.1f-1ubuntu2.21",
        "1.0.1f-1ubuntu2.22",
        "1.0.1f-1ubuntu2.23",
        "1.0.1f-1ubuntu2.24",
        "1.0.1f-1ubuntu2.25",
        "1.0.1f-1ubuntu2.26",
        "1.0.1f-1ubuntu2.27",
        "1.0.1f-1ubuntu2.27+esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "David Benjamin discovered that OpenSSL incorrectly handled comparing\ncertificates containing a EDIPartyName name type. A remote attacker could\npossibly use this issue to cause OpenSSL to crash, resulting in a denial of\nservice. (CVE-2020-1971)\n\nTavis Ormandy discovered that OpenSSL incorrectly handled parsing issuer\nfields. A remote attacker could possibly use this issue to cause OpenSSL to\ncrash, resulting in a denial of service. (CVE-2021-23841)\n",
  "id": "USN-4745-1",
  "modified": "2026-06-01T07:03:52Z",
  "published": "2021-02-23T19:33:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4745-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-1971"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-23841"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "openssl vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-1971",
    "UBUNTU-CVE-2021-23841"
  ]
}



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