fkie_cve-2019-16789
Vulnerability from fkie_nvd
Published
2019-12-26 17:15
Modified
2024-11-21 04:31
Severity ?
7.1 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:N
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Summary
In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Specially crafted requests containing special whitespace characters in the Transfer-Encoding header would get parsed by Waitress as being a chunked request, but a front-end server would use the Content-Length instead as the Transfer-Encoding header is considered invalid due to containing invalid characters. If a front-end server does HTTP pipelining to a backend Waitress server this could lead to HTTP request splitting which may lead to potential cache poisoning or unexpected information disclosure. This issue is fixed in Waitress 1.4.1 through more strict HTTP field validation.
References
security-advisories@github.comhttps://access.redhat.com/errata/RHSA-2020:0720Third Party Advisory
security-advisories@github.comhttps://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixesRelease Notes, Vendor Advisory
security-advisories@github.comhttps://github.com/Pylons/waitress/commit/11d9e138125ad46e951027184b13242a3c1de017Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/github/advisory-review/pull/14604Broken Link, Third Party Advisory
security-advisories@github.comhttps://lists.debian.org/debian-lts-announce/2022/05/msg00011.htmlMailing List, Third Party Advisory
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/
security-advisories@github.comhttps://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2020:0720Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixesRelease Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/Pylons/waitress/commit/11d9e138125ad46e951027184b13242a3c1de017Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/github/advisory-review/pull/14604Broken Link, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/05/msg00011.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
Impacted products
Vendor Product Version
agendaless waitress *
oracle communications_cloud_native_core_network_function_cloud_native_environment 1.10.0
debian debian_linux 9.0
fedoraproject fedora 30
fedoraproject fedora 31
redhat openstack 15


To clipboard 

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  "cveTags": [],
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      "value": "In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Specially crafted requests containing special whitespace characters in the Transfer-Encoding header would get parsed by Waitress as being a chunked request, but a front-end server would use the Content-Length instead as the Transfer-Encoding header is considered invalid due to containing invalid characters. If a front-end server does HTTP pipelining to a backend Waitress server this could lead to HTTP request splitting which may lead to potential cache poisoning or unexpected information disclosure. This issue is fixed in Waitress 1.4.1 through more strict HTTP field validation."
    },
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      "lang": "es",
      "value": "En Waitress versiones hasta 1.4.0, si un servidor proxy es usado frente a waitress, un atacante puede enviar una petici\u00f3n no comprobada que omita el front-end y que waitress analiza de manera diferente conllevando a un posible trafico no autorizado de peticiones HTTP. Waitress analizar\u00eda las peticiones especialmente dise\u00f1adas que contienen caracteres de espacio en blanco especiales en el encabezado Transfer-Encoding como si fuera una petici\u00f3n fragmentada, pero un servidor front-end usar\u00eda Content-Length en su lugar ya que el encabezado Transfer-Encoding es considerado no v\u00e1lido debido a que contiene caracteres no v\u00e1lidos. Si un servidor de aplicaciones para usuario establece una canalizaci\u00f3n HTTP hacia un servidor backend de Waitress, esto podr\u00eda conllevar a una divisi\u00f3n de la petici\u00f3n HTTP, lo que podr\u00eda generar un posible envenenamiento de la cach\u00e9 o una divulgaci\u00f3n inesperada de informaci\u00f3n. Este problema se soluciona en Waitress versi\u00f3n 1.4.1 por medio de una comprobaci\u00f3n del campo HTTP m\u00e1s estricta."
    }
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  "id": "CVE-2019-16789",
  "lastModified": "2024-11-21T04:31:11.543",
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}


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