fkie_cve-2024-49768
Vulnerability from fkie_nvd
Published
2024-10-29 15:15
Modified
2024-11-07 17:28
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
4.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recv_bytes (defaults to 8192) long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled (default) we won't read any more requests, and when the first request fails due to a parsing error, we simply close the connection. However when request lookahead is enabled, it is possible to process and receive the first request, start sending the error message back to the client while we read the next request and queue it. This will allow the secondary request to be serviced by the worker thread while the connection should be closed. Waitress 3.0.1 fixes the race condition. As a workaround, disable channel_request_lookahead, this is set to 0 by default disabling this feature.
References
security-advisories@github.comhttps://github.com/Pylons/waitress/commit/e4359018537af376cf24bd13616d861e2fb76f65Patch
security-advisories@github.comhttps://github.com/Pylons/waitress/security/advisories/GHSA-9298-4cf8-g4wjVendor Advisory
Impacted products
Vendor Product Version
agendaless waitress *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:agendaless:waitress:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "F2A42F5E-5226-4FEA-B71E-AE3C4753962D",
                     versionEndExcluding: "3.0.1",
                     versionStartIncluding: "2.0.0",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recv_bytes (defaults to 8192) long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled (default) we won't read any more requests, and when the first request fails due to a parsing error, we simply close the connection. However when request lookahead is enabled, it is possible to process and receive the first request, start sending the error message back to the client while we read the next request and queue it. This will allow the secondary request to be serviced by the worker thread while the connection should be closed. Waitress 3.0.1 fixes the race condition. As a workaround, disable channel_request_lookahead, this is set to 0 by default disabling this feature.",
      },
      {
         lang: "es",
         value: "Waitress es un servidor de interfaz de puerta de enlace de servidor web para Python 2 y 3. Un cliente remoto puede enviar una solicitud que tenga exactamente recv_bytes (el valor predeterminado es 8192), seguida de una solicitud secundaria mediante canalización HTTP. Cuando la búsqueda anticipada de solicitudes está deshabilitada (valor predeterminado), no leeremos más solicitudes y, cuando la primera solicitud falla debido a un error de análisis, simplemente cerramos la conexión. Sin embargo, cuando la búsqueda anticipada de solicitudes está habilitada, es posible procesar y recibir la primera solicitud, comenzar a enviar el mensaje de error al cliente mientras leemos la siguiente solicitud y la ponemos en cola. Esto permitirá que el subproceso de trabajo atienda la solicitud secundaria mientras la conexión debería estar cerrada. Waitress 3.0.1 corrige la condición de ejecución. Como solución alternativa, deshabilite channel_request_lookahead, que se establece en 0 de manera predeterminada, lo que deshabilita esta función.",
      },
   ],
   id: "CVE-2024-49768",
   lastModified: "2024-11-07T17:28:02.853",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "NETWORK",
               availabilityImpact: "NONE",
               baseScore: 9.1,
               baseSeverity: "CRITICAL",
               confidentialityImpact: "HIGH",
               integrityImpact: "HIGH",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
               version: "3.1",
            },
            exploitabilityScore: 3.9,
            impactScore: 5.2,
            source: "security-advisories@github.com",
            type: "Secondary",
         },
         {
            cvssData: {
               attackComplexity: "HIGH",
               attackVector: "NETWORK",
               availabilityImpact: "NONE",
               baseScore: 4.8,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "LOW",
               integrityImpact: "LOW",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
               version: "3.1",
            },
            exploitabilityScore: 2.2,
            impactScore: 2.5,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2024-10-29T15:15:11.440",
   references: [
      {
         source: "security-advisories@github.com",
         tags: [
            "Patch",
         ],
         url: "https://github.com/Pylons/waitress/commit/e4359018537af376cf24bd13616d861e2fb76f65",
      },
      {
         source: "security-advisories@github.com",
         tags: [
            "Vendor Advisory",
         ],
         url: "https://github.com/Pylons/waitress/security/advisories/GHSA-9298-4cf8-g4wj",
      },
   ],
   sourceIdentifier: "security-advisories@github.com",
   vulnStatus: "Analyzed",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-367",
            },
            {
               lang: "en",
               value: "CWE-444",
            },
         ],
         source: "security-advisories@github.com",
         type: "Primary",
      },
   ],
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.