ubuntu-cve-2021-46848
Vulnerability from osv_ubuntu
Published
2022-10-25 00:00
Modified
2026-04-22 07:40
Summary
Details

GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der.

Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libtasn1-3-bin",
            "binary_version": "3.4-3ubuntu0.6+esm1"
          },
          {
            "binary_name": "libtasn1-6",
            "binary_version": "3.4-3ubuntu0.6+esm1"
          },
          {
            "binary_name": "libtasn1-bin",
            "binary_version": "3.4-3ubuntu0.6+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "libtasn1-6",
        "purl": "pkg:deb/ubuntu/libtasn1-6@3.4-3ubuntu0.6+esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.4-3ubuntu0.6+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.3-2",
        "3.4-2",
        "3.4-3",
        "3.4-3ubuntu0.1",
        "3.4-3ubuntu0.2",
        "3.4-3ubuntu0.3",
        "3.4-3ubuntu0.4",
        "3.4-3ubuntu0.5",
        "3.4-3ubuntu0.6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libtasn1-3-bin",
            "binary_version": "4.7-3ubuntu0.16.04.3+esm3"
          },
          {
            "binary_name": "libtasn1-6",
            "binary_version": "4.7-3ubuntu0.16.04.3+esm3"
          },
          {
            "binary_name": "libtasn1-bin",
            "binary_version": "4.7-3ubuntu0.16.04.3+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libtasn1-6",
        "purl": "pkg:deb/ubuntu/libtasn1-6@4.7-3ubuntu0.16.04.3+esm3?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.7-3ubuntu0.16.04.3+esm3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.5-2",
        "4.7-2",
        "4.7-3",
        "4.7-3ubuntu0.16.04.1",
        "4.7-3ubuntu0.16.04.2",
        "4.7-3ubuntu0.16.04.3",
        "4.7-3ubuntu0.16.04.3+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libtasn1-6",
            "binary_version": "4.13-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "libtasn1-bin",
            "binary_version": "4.13-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libtasn1-6",
        "purl": "pkg:deb/ubuntu/libtasn1-6@4.13-2ubuntu0.1~esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.13-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.12-2.1",
        "4.12-3",
        "4.13-2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libtasn1-6",
            "binary_version": "4.16.0-2ubuntu0.1+esm1"
          },
          {
            "binary_name": "libtasn1-bin",
            "binary_version": "4.16.0-2ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libtasn1-6",
        "purl": "pkg:deb/ubuntu/libtasn1-6@4.16.0-2ubuntu0.1+esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.16.0-2ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.14-3",
        "4.15.0-2",
        "4.16.0-2",
        "4.16.0-2ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libtasn1-6",
            "binary_version": "4.18.0-4ubuntu0.2"
          },
          {
            "binary_name": "libtasn1-bin",
            "binary_version": "4.18.0-4ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libtasn1-6",
        "purl": "pkg:deb/ubuntu/libtasn1-6@4.18.0-4ubuntu0.2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-4ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.16.0-2",
        "4.16.0-2build1",
        "4.17.0-2",
        "4.18.0-3",
        "4.18.0-4",
        "4.18.0-4build1",
        "4.18.0-4ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der.",
  "id": "UBUNTU-CVE-2021-46848",
  "modified": "2026-04-22T07:40:13Z",
  "published": "2022-10-25T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-46848"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5707-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-46848"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7954-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7954-2"
    }
  ],
  "related": [
    "USN-5707-1",
    "USN-7954-1",
    "USN-7954-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-46848"
  ]
}



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