ubuntu-cve-2020-27638
Vulnerability from osv_ubuntu
Published
2020-10-22 13:15
Modified
2025-09-08 16:46
Summary
Details

receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "fastd",
            "binary_version": "17-4ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "fastd",
        "purl": "pkg:deb/ubuntu/fastd@17-4ubuntu0.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "17-4ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "17-4",
        "17-4build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "fastd",
            "binary_version": "18-3ubuntu0.18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "fastd",
        "purl": "pkg:deb/ubuntu/fastd@18-3ubuntu0.18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "18-3ubuntu0.18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "18-2",
        "18-2ubuntu1",
        "18-2ubuntu2",
        "18-3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "fastd",
            "binary_version": "18-3ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "fastd",
        "purl": "pkg:deb/ubuntu/fastd@18-3ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "18-3ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "18-3build1"
      ]
    }
  ],
  "aliases": [],
  "details": "receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.",
  "id": "UBUNTU-CVE-2020-27638",
  "modified": "2025-09-08T16:46:26Z",
  "published": "2020-10-22T13:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27638"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/NeoRaider/fastd/commit/737925113363b6130879729cdff9ccc46c33eaea"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.debian.org/972521"
    },
    {
      "type": "REPORT",
      "url": "https://fastd.readthedocs.io/en/stable/releases/v21.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4610-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4718-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-27638"
    }
  ],
  "related": [
    "USN-4610-1",
    "USN-4718-1"
  ],
  "schema_version": "1.7.0",
  "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": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-27638"
  ]
}



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