pysec-2024-211
Vulnerability from pysec
Published
2024-10-29 15:15
Modified
2025-01-19 19:19
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details

Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the connection before waitress has had the opportunity to call getpeername() waitress won't correctly clean up the connection leading to the main thread attempting to write to a socket that no longer exists, but not removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write function. A remote attacker could run waitress out of available sockets with very little resources required. Waitress 3.0.1 contains fixes that remove the race condition.

Impacted products
Name purl
waitress pkg:pypi/waitress
Aliases


To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "waitress",
        "purl": "pkg:pypi/waitress"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1ae4e894c9f76543bee06584001583fc6fa8c95c"
            }
          ],
          "repo": "https://github.com/pylons/waitress",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1",
        "0.2",
        "0.3",
        "0.4",
        "0.5",
        "0.6",
        "0.6.1",
        "0.7",
        "0.8",
        "0.8.1",
        "0.8.10",
        "0.8.11b0",
        "0.8.2",
        "0.8.3",
        "0.8.4",
        "0.8.5",
        "0.8.6",
        "0.8.7",
        "0.8.8",
        "0.8.9",
        "0.9.0",
        "0.9.0b0",
        "0.9.0b1",
        "1.0.0",
        "1.0.1",
        "1.0.2",
        "1.0a1",
        "1.0a2",
        "1.1.0",
        "1.2.0",
        "1.2.0b1",
        "1.2.0b2",
        "1.2.0b3",
        "1.2.1",
        "1.3.0",
        "1.3.0b0",
        "1.3.1",
        "1.4.0",
        "1.4.1",
        "1.4.2",
        "1.4.3",
        "1.4.4",
        "2.0.0",
        "2.0.0b0",
        "2.0.0b1",
        "2.1.0",
        "2.1.0b0",
        "2.1.1",
        "2.1.2",
        "3.0.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-49769",
    "GHSA-3f84-rpwh-47g6"
  ],
  "details": "Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the connection before waitress has had the opportunity to call getpeername() waitress won\u0027t correctly clean up the connection leading to the main thread attempting to write to a socket that no longer exists, but not removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write function. A remote attacker could run waitress out of available sockets with very little resources required. Waitress 3.0.1 contains fixes that remove the race condition.",
  "id": "PYSEC-2024-211",
  "modified": "2025-01-19T19:19:01.852094+00:00",
  "published": "2024-10-29T15:15:12+00:00",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Pylons/waitress/pull/435"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Pylons/waitress/issues/418"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00012.html"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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