usn-5051-1
Vulnerability from osv_ubuntu
Published
2021-08-24 15:26
Modified
2026-04-27 14:11
Summary
openssl vulnerabilities
Details

John Ouyang discovered that OpenSSL incorrectly handled decrypting SM2 data. A remote attacker could use this issue to cause applications using OpenSSL to crash, resulting in a denial of service, or possibly change application behaviour. (CVE-2021-3711)

Ingo Schwarze discovered that OpenSSL incorrectly handled certain ASN.1 strings. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2021-3712)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-3711",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-3712",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libssl1.1",
            "binary_version": "1.1.1-1ubuntu2.1~18.04.13"
          },
          {
            "binary_name": "openssl",
            "binary_version": "1.1.1-1ubuntu2.1~18.04.13"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.1.1-1ubuntu2.1~18.04.13?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.1-1ubuntu2.1~18.04.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.2g-1ubuntu13",
        "1.0.2g-1ubuntu14",
        "1.0.2n-1ubuntu1",
        "1.1.0g-2ubuntu1",
        "1.1.0g-2ubuntu2",
        "1.1.0g-2ubuntu3",
        "1.1.0g-2ubuntu4",
        "1.1.0g-2ubuntu4.1",
        "1.1.0g-2ubuntu4.3",
        "1.1.1-1ubuntu2.1~18.04.1",
        "1.1.1-1ubuntu2.1~18.04.2",
        "1.1.1-1ubuntu2.1~18.04.3",
        "1.1.1-1ubuntu2.1~18.04.4",
        "1.1.1-1ubuntu2.1~18.04.5",
        "1.1.1-1ubuntu2.1~18.04.6",
        "1.1.1-1ubuntu2.1~18.04.7",
        "1.1.1-1ubuntu2.1~18.04.8",
        "1.1.1-1ubuntu2.1~18.04.9",
        "1.1.1-1ubuntu2.1~18.04.10"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-3711",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-3712",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libssl1.1",
            "binary_version": "1.1.1f-1ubuntu2.8"
          },
          {
            "binary_name": "openssl",
            "binary_version": "1.1.1f-1ubuntu2.8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.1.1f-1ubuntu2.8?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.1f-1ubuntu2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.1c-1ubuntu4",
        "1.1.1d-2ubuntu3",
        "1.1.1d-2ubuntu6",
        "1.1.1f-1ubuntu1",
        "1.1.1f-1ubuntu2",
        "1.1.1f-1ubuntu2.1",
        "1.1.1f-1ubuntu2.2",
        "1.1.1f-1ubuntu2.3",
        "1.1.1f-1ubuntu2.4",
        "1.1.1f-1ubuntu2.5"
      ]
    }
  ],
  "aliases": [],
  "details": "John Ouyang discovered that OpenSSL incorrectly handled decrypting SM2\ndata. A remote attacker could use this issue to cause applications using\nOpenSSL to crash, resulting in a denial of service, or possibly change\napplication behaviour. (CVE-2021-3711)\n\nIngo Schwarze discovered that OpenSSL incorrectly handled certain ASN.1\nstrings. A remote attacker could use this issue to cause OpenSSL to crash,\nresulting in a denial of service, or possibly obtain sensitive information.\n(CVE-2021-3712)\n",
  "id": "USN-5051-1",
  "modified": "2026-04-27T14:11:27Z",
  "published": "2021-08-24T15:26:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5051-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3711"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3712"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "openssl vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-3711",
    "UBUNTU-CVE-2021-3712"
  ]
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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