fkie_cve-2021-32715
Vulnerability from fkie_nvd
Published
2021-07-07 20:15
Modified
2024-11-21 06:07
Severity ?
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
hyper is an HTTP library for rust. hyper's HTTP/1 server code had a flaw that incorrectly parses and accepts requests with a `Content-Length` header with a prefixed plus sign, when it should have been rejected as illegal. This combined with an upstream HTTP proxy that doesn't parse such `Content-Length` headers, but forwards them, can result in "request smuggling" or "desync attacks". The flaw exists in all prior versions of hyper prior to 0.14.10, if built with `rustc` v1.5.0 or newer. The vulnerability is patched in hyper version 0.14.10. Two workarounds exist: One may reject requests manually that contain a plus sign prefix in the `Content-Length` header or ensure any upstream proxy handles `Content-Length` headers with a plus sign prefix.
References
security-advisories@github.comhttps://github.com/hyperium/hyper/security/advisories/GHSA-f3pg-qwvg-p99cExploit, Third Party Advisory
security-advisories@github.comhttps://github.com/rust-lang/rust/pull/28826/commits/123a83326fb95366e94a3be1a74775df4db97739Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/hyperium/hyper/security/advisories/GHSA-f3pg-qwvg-p99cExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/rust-lang/rust/pull/28826/commits/123a83326fb95366e94a3be1a74775df4db97739Patch, Third Party Advisory
Impacted products
Vendor Product Version
hyper hyper *


To clipboard 

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              "versionEndExcluding": "0.14.10",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "hyper is an HTTP library for rust. hyper\u0027s HTTP/1 server code had a flaw that incorrectly parses and accepts requests with a `Content-Length` header with a prefixed plus sign, when it should have been rejected as illegal. This combined with an upstream HTTP proxy that doesn\u0027t parse such `Content-Length` headers, but forwards them, can result in \"request smuggling\" or \"desync attacks\". The flaw exists in all prior versions of hyper prior to 0.14.10, if built with `rustc` v1.5.0 or newer. The vulnerability is patched in hyper version 0.14.10. Two workarounds exist: One may reject requests manually that contain a plus sign prefix in the `Content-Length` header or ensure any upstream proxy handles `Content-Length` headers with a plus sign prefix."
    },
    {
      "lang": "es",
      "value": "El c\u00f3digo del servidor HTTP/1 de hyper presentaba un fallo que analizaba y aceptaba incorrectamente peticiones con una cabecera \"Content-Length\" con un signo m\u00e1s prefijado, cuando deber\u00eda haber sido rechazada como ilegal. Esto, combinado con un proxy HTTP ascendente que no analiza dichas cabeceras \"Content-Length\", sino que las reenv\u00eda, puede resultar en \"request smuggling\" o \"desync attacks\". El fallo se presenta en todas las versiones de hyper anteriores a 0.14.10, si se construye con \"rustc\" versi\u00f3n v1.5.0 o m\u00e1s reciente. La vulnerabilidad est\u00e1 parcheada en la versi\u00f3n 0.14.10 de hyper. Se presentan dos soluciones: Uno puede rechazar manualmente las peticiones que contengan un prefijo de signo m\u00e1s en la cabecera \"Content-Length\" o asegurarse de que cualquier proxy upstream maneja las cabeceras \"Content-Length\" con un prefijo de signo m\u00e1s"
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  ],
  "id": "CVE-2021-32715",
  "lastModified": "2024-11-21T06:07:35.213",
  "metrics": {
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        "type": "Primary"
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  "published": "2021-07-07T20:15:08.750",
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      "tags": [
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
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}


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