usn-7239-1
Vulnerability from osv_ubuntu
Published
2025-01-28 23:36
Modified
2026-04-22 07:37
Summary
libmicrodns vulnerabilities
Details

It was discovered that libmicrodns could recursively follow the same compression pointer, leading to an infinite loop. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-6071)

It was discovered that libmicrodns did not check the return value of the rr_decode function, which could lead to a double free. An attacker could possibly use this issue to execute arbitrary code. (CVE-2020-6072)

It was discovered that libmicrodns incorrectly handled certain inputs, which could lead to an integer overflow. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-6073)

It was discovered that libmicrodns incorrectly handled certain inputs, which could lead to a out-of-bounds read. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-6077)

It was discovered that libmicrodns incorrectly handled memory when parsing mDNS messages in mdns_recv, which could lead to a NULL pointer dereference. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-6078)

It was discovered that libmicrodns incorrectly handled memory, which could lead to excessive memory consumption due to memory leaks. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-6079, CVE-2020-6080)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-6071",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-6072",
              "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": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-6073",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-6077",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-6078",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-6079",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-6080",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libmicrodns0",
            "binary_version": "0.0.8-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libmicrodns",
        "purl": "pkg:deb/ubuntu/libmicrodns@0.0.8-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.8-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.7-2",
        "0.0.8-1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that libmicrodns could recursively follow the same\ncompression pointer, leading to an infinite loop. An attacker could\npossibly use this issue to cause a denial of service. (CVE-2020-6071)\n\nIt was discovered that libmicrodns did not check the return value of the\nrr_decode function, which could lead to a double free. An attacker could\npossibly use this issue to execute arbitrary code. (CVE-2020-6072)\n\nIt was discovered that libmicrodns incorrectly handled certain inputs,\nwhich could lead to an integer overflow. An attacker could possibly use\nthis issue to cause a denial of service. (CVE-2020-6073)\n\nIt was discovered that libmicrodns incorrectly handled certain inputs,\nwhich could lead to a out-of-bounds read. An attacker could possibly use\nthis issue to cause a denial of service. (CVE-2020-6077)\n\nIt was discovered that libmicrodns incorrectly handled memory when parsing\nmDNS messages in mdns_recv, which could lead to a NULL pointer dereference.\nAn attacker could possibly use this issue to cause a denial of service.\n(CVE-2020-6078)\n\nIt was discovered that libmicrodns incorrectly handled memory, which could\nlead to excessive memory consumption due to memory leaks. An attacker\ncould possibly use this issue to cause a denial of service.\n(CVE-2020-6079, CVE-2020-6080)\n",
  "id": "USN-7239-1",
  "modified": "2026-04-22T07:37:15Z",
  "published": "2025-01-28T23:36:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7239-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-6071"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-6072"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-6073"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-6077"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-6078"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-6079"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-6080"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libmicrodns vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-6071",
    "UBUNTU-CVE-2020-6072",
    "UBUNTU-CVE-2020-6073",
    "UBUNTU-CVE-2020-6077",
    "UBUNTU-CVE-2020-6078",
    "UBUNTU-CVE-2020-6079",
    "UBUNTU-CVE-2020-6080"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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