ubuntu-cve-2021-32566
Vulnerability from osv_ubuntu
Published
2021-06-30 08:15
Modified
2026-04-22 07:40
Summary
Details

Improper Input Validation vulnerability in HTTP/2 of Apache Traffic Server allows an attacker to DOS the server. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.

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": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "5.3.0-2ubuntu2"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "5.3.0-2ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@5.3.0-2ubuntu2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.3.0-2ubuntu1",
        "5.3.0-2ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "7.1.2+ds-3"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "7.1.2+ds-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@7.1.2+ds-3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.0.0-5",
        "7.1.2+ds-2",
        "7.1.2+ds-2build1",
        "7.1.2+ds-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "8.0.5+ds-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "8.0.5+ds-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@8.0.5+ds-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.0.5+ds-1",
        "8.0.5+ds-2",
        "8.0.5+ds-2build1",
        "8.0.5+ds-2ubuntu1",
        "8.0.5+ds-3",
        "8.0.5+ds-3ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "Improper Input Validation vulnerability in HTTP/2 of Apache Traffic Server allows an attacker to DOS the server. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.",
  "id": "UBUNTU-CVE-2021-32566",
  "modified": "2026-04-22T07:40:03Z",
  "published": "2021-06-30T08:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-32566"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cannounce.trafficserver.apache.org%3E"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/apache/trafficserver/pull/7945"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/apache/trafficserver/commit/034965e0fd0def114658f0048d953d1c16a95bed"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/apache/trafficserver/commit/b82a3d192f995fb9d78e1c44d51d9acca4783277"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-32566"
    }
  ],
  "related": [],
  "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-2021-32566"
  ]
}



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Nomenclature

  • 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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