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nvd-json-data-feeds/CVE-2019/CVE-2019-167xx/CVE-2019-16785.json
cad-safe-bot b47d02a333 Auto-Update: 2023-11-07T21:02:52.274489+00:00
2023-11-07 21:03:21 +00:00

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{
"id": "CVE-2019-16785",
"sourceIdentifier": "security-advisories@github.com",
"published": "2019-12-20T23:15:11.167",
"lastModified": "2023-11-07T03:05:44.173",
"vulnStatus": "Modified",
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"lang": "en",
"value": "Waitress through version 1.3.1 implemented a \"MAY\" part of the RFC7230 which states: \"Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR.\" Unfortunately if a front-end server does not parse header fields with an LF the same way as it does those with a CRLF it can lead to the front-end and the back-end server parsing the same HTTP message in two different ways. This can lead to a potential for HTTP request smuggling/splitting whereby Waitress may see two requests while the front-end server only sees a single HTTP message. This issue is fixed in Waitress 1.4.0."
},
{
"lang": "es",
"value": "Waitress versi\u00f3n hasta 1.3.1, implement\u00f3 una parte \"MAY\" del RFC7230 que declara: \"Aunque el terminador de l\u00ednea para los campos de l\u00ednea de inicio y encabezado es la secuencia CRLF, un receptor PUEDE reconocer un LF \u00fanico como un terminador de l\u00ednea e ignorar cualquier CR anterior\". Desafortunadamente, si un servidor front-end no analiza los campos de encabezado con un LF de igual forma que los que tienen un CRLF, puede conllevar a que el servidor front-end y el back-end analice el mismo mensaje HTTP de dos maneras diferentes. Esto puede conllevar a un posible tr\u00e1fico no autorizado y una divisi\u00f3n de peticiones HTTP, por lo que Waitress puede visualizar dos peticiones mientras que el servidor front-end solo visualiza un solo mensaje HTTP. Este problema fue corregido en Waitress versi\u00f3n 1.4.0."
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"attackComplexity": "LOW",
"privilegesRequired": "NONE",
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