vuln-ubuntu/data/osv/usn/USN-4705-1.json

{
  "schema_version": "1.7.0",
  "id": "USN-4705-1",
  "summary": "sudo vulnerabilities",
  "details": "It was discovered that Sudo incorrectly handled memory when parsing command\nlines. A local attacker could possibly use this issue to obtain unintended\naccess to the administrator account. (CVE-2021-3156)\n\nIt was discovered that the Sudo sudoedit utility incorrectly handled\nchecking directory permissions. A local attacker could possibly use this\nissue to bypass file permissions and determine if a directory exists or\nnot.  (CVE-2021-23239)\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2021-3156",
    "UBUNTU-CVE-2021-23239"
  ],
  "related": [],
  "published": "2021-01-26T18:48:16Z",
  "modified": "2026-04-27T14:11:26Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "sudo",
        "purl": "pkg:deb/ubuntu/sudo@1.8.16-0ubuntu1.10?arch=source&distro=xenial"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.8.16-0ubuntu1.10"
            }
          ]
        }
      ],
      "versions": [
        "1.8.12-1ubuntu3",
        "1.8.16-0ubuntu1",
        "1.8.16-0ubuntu1.1",
        "1.8.16-0ubuntu1.2",
        "1.8.16-0ubuntu1.3",
        "1.8.16-0ubuntu1.4",
        "1.8.16-0ubuntu1.5",
        "1.8.16-0ubuntu1.6",
        "1.8.16-0ubuntu1.7",
        "1.8.16-0ubuntu1.8",
        "1.8.16-0ubuntu1.9"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sudo",
            "binary_version": "1.8.16-0ubuntu1.10"
          },
          {
            "binary_name": "sudo-ldap",
            "binary_version": "1.8.16-0ubuntu1.10"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:16.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-3156",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "high"
                }
              ]
            },
            {
              "id": "CVE-2021-23239",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"
                },
                {
                  "type": "Ubuntu",
                  "score": "low"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "sudo",
        "purl": "pkg:deb/ubuntu/sudo@1.8.21p2-3ubuntu1.4?arch=source&distro=bionic"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.8.21p2-3ubuntu1.4"
            }
          ]
        }
      ],
      "versions": [
        "1.8.20p2-1ubuntu1",
        "1.8.21p2-2ubuntu1",
        "1.8.21p2-3ubuntu1",
        "1.8.21p2-3ubuntu1.1",
        "1.8.21p2-3ubuntu1.2",
        "1.8.21p2-3ubuntu1.3"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sudo",
            "binary_version": "1.8.21p2-3ubuntu1.4"
          },
          {
            "binary_name": "sudo-ldap",
            "binary_version": "1.8.21p2-3ubuntu1.4"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:18.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-3156",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "high"
                }
              ]
            },
            {
              "id": "CVE-2021-23239",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"
                },
                {
                  "type": "Ubuntu",
                  "score": "low"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "sudo",
        "purl": "pkg:deb/ubuntu/sudo@1.8.31-1ubuntu1.2?arch=source&distro=focal"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.8.31-1ubuntu1.2"
            }
          ]
        }
      ],
      "versions": [
        "1.8.27-1ubuntu4",
        "1.8.29-1ubuntu1",
        "1.8.31-1ubuntu1",
        "1.8.31-1ubuntu1.1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sudo",
            "binary_version": "1.8.31-1ubuntu1.2"
          },
          {
            "binary_name": "sudo-ldap",
            "binary_version": "1.8.31-1ubuntu1.2"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:20.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-3156",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "high"
                }
              ]
            },
            {
              "id": "CVE-2021-23239",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"
                },
                {
                  "type": "Ubuntu",
                  "score": "low"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4705-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3156"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-23239"
    }
  ]
}