Vulnerability-Lookup

PYSEC-2024-211

Vulnerability from pysec - Published: 2024-10-29 15:15 - Updated: 2025-01-19 19:19

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.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impacted products

Name	purl
waitress	pkg:pypi/waitress

Aliases

JSON

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"
    }
  ]
}

CVE-2024-49769 (GCVE-0-2024-49769)

Vulnerability from cvelistv5 – Published: 2024-10-29 14:18 – Updated: 2024-11-17 00:11

Title

Waitress has a denial of service leading to high CPU usage/resource exhaustion

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-29 14:56 UTC

CWE

CWE-772 - Missing Release of Resource after Effective Lifetime

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://github.com/Pylons/waitress/security/advis…	x_refsource_CONFIRM
https://github.com/Pylons/waitress/issues/418	x_refsource_MISC
https://github.com/Pylons/waitress/pull/435	x_refsource_MISC
https://github.com/Pylons/waitress/commit/1ae4e89…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

2 products

Vendor	Product	Version
Pylons	waitress	Affected: < 3.0.1
pylons	waitress	Affected: 0 , < 3.0.1 (custom) cpe:2.3:a:pylons:waitress::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:pylons:waitress:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "waitress",
            "vendor": "pylons",
            "versions": [
              {
                "lessThan": "3.0.1",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49769",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-29T14:56:24.506825Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-29T14:56:55.296Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-11-17T00:11:26.954Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00012.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "waitress",
          "vendor": "Pylons",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.0.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-772",
              "description": "CWE-772: Missing Release of Resource after Effective Lifetime",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-10-29T14:18:40.951Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6"
        },
        {
          "name": "https://github.com/Pylons/waitress/issues/418",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Pylons/waitress/issues/418"
        },
        {
          "name": "https://github.com/Pylons/waitress/pull/435",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Pylons/waitress/pull/435"
        },
        {
          "name": "https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c"
        }
      ],
      "source": {
        "advisory": "GHSA-3f84-rpwh-47g6",
        "discovery": "UNKNOWN"
      },
      "title": "Waitress has a denial of service leading to high CPU usage/resource exhaustion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-49769",
    "datePublished": "2024-10-29T14:18:40.951Z",
    "dateReserved": "2024-10-18T13:43:23.457Z",
    "dateUpdated": "2024-11-17T00:11:26.954Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-3F84-RPWH-47G6

Vulnerability from github – Published: 2024-10-29 14:33 – Updated: 2025-01-21 17:53

Summary

Waitress vulnerable to DoS leading to high CPU usage/resource exhaustion

Details

Impact

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.

Patches

Waitress 3.0.1 contains fixes that remove the race condition.

Workarounds

No work-around.

References

https://github.com/Pylons/waitress/issues/418
https://github.com/Pylons/waitress/pull/435

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "waitress"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-49769"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-772"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-10-29T14:33:00Z",
    "nvd_published_at": "2024-10-29T15:15:12Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nWhen 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.\n\nA remote attacker could run waitress out of available sockets with very little resources required.\n\n### Patches\n\nWaitress 3.0.1 contains fixes that remove the race condition.\n\n### Workarounds\n\nNo work-around.\n\n### References\n\n- https://github.com/Pylons/waitress/issues/418\n- https://github.com/Pylons/waitress/pull/435\n",
  "id": "GHSA-3f84-rpwh-47g6",
  "modified": "2025-01-21T17:53:27Z",
  "published": "2024-10-29T14:33:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49769"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Pylons/waitress/issues/418"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Pylons/waitress/pull/435"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Pylons/waitress"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/waitress/PYSEC-2024-211.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00012.html"
    }
  ],
  "schema_version": "1.4.0",
  "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": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Waitress vulnerable to DoS leading to high CPU usage/resource exhaustion"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

PYSEC-2024-211

CVE-2024-49769 (GCVE-0-2024-49769)

GHSA-3F84-RPWH-47G6

Impact

Patches

Workarounds

References

Tags

Sightings

Nomenclature

Related by attack behaviour