CVE-2024-49769

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c	Patch
https://github.com/Pylons/waitress/issues/418	Issue Tracking
https://github.com/Pylons/waitress/pull/435	Patch
https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/11/msg00012.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:agendaless:waitress:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2024-10-29 15:15

Updated : 2024-11-21 09:41

NVD link : CVE-2024-49769

Mitre link : CVE-2024-49769

CVE.ORG link : CVE-2024-49769

JSON object : View

Products Affected

agendaless

waitress

CWE

CWE-772

Missing Release of Resource after Effective Lifetime

{"id": "CVE-2024-49769", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2024-10-29T15:15:12.030", "references": [{"url": "https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/Pylons/waitress/issues/418", "tags": ["Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/Pylons/waitress/pull/435", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00012.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-772"}]}], "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'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."}, {"lang": "es", "value": "Waitress es un servidor de interfaz de puerta de enlace de servidor web para Python 2 y 3. Cuando un cliente remoto cierra la conexi\u00f3n antes de que waitress haya tenido la oportunidad de llamar a getpeername(), waitress no limpiar\u00e1 correctamente la conexi\u00f3n, lo que lleva al hilo principal a intentar escribir en un socket que ya no existe, pero no lo eliminar\u00e1 de la lista de sockets que se intentar\u00e1n procesar. Esto conduce a un bucle de actividad que llama a la funci\u00f3n de escritura. Un atacante remoto podr\u00eda dejar a waitress sin sockets disponibles y requerir muy pocos recursos. Waitress 3.0.1 contiene correcciones que eliminan la condici\u00f3n de carrera."}], "lastModified": "2024-11-21T09:41:49.443", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:agendaless:waitress:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BEED9ACE-30D9-4684-B15C-FABCE120401F", "versionEndExcluding": "3.0.1"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}