CVE-2020-7238 (GCVE-0-2020-7238)

Vulnerability from cvelistv5 – Published: 2020-01-27 16:43 – Updated: 2024-08-04 09:25
VLAI
Summary
Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2230 records in the last 180 days details
References
URL Tags
https://netty.io/news/ x_refsource_MISC
https://github.com/jdordonezn/CVE-2020-72381/issues/1 x_refsource_MISC
https://access.redhat.com/errata/RHSA-2020:0497 vendor-advisoryx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2020:0601 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0606 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0605 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0567 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0806 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0811 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0804 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0805 vendor-advisoryx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2021/dsa-4885 vendor-advisoryx_refsource_DEBIAN
https://lists.apache.org/thread.html/rc8d554aad88… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r131e572d003… mailing-listx_refsource_MLIST
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        ],
        "cveTags": [],
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          {
            "lang": "en",
            "value": "Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869."
          },
          {
            "lang": "es",
            "value": "Netty versi\u00f3n 4.1.43.Final, permite el tr\u00e1fico no autorizado de peticiones HTTP porque maneja inapropiadamente el espacio en blanco de Transfer-Encoding (tal y como una l\u00ednea [space]Transfer-Encoding:chunked) y un encabezado Content-Length posterior. Este problema existe debido a una correcci\u00f3n incompleta para el CVE-2019-16869."
          }
        ],
        "id": "CVE-2020-7238",
        "lastModified": "2024-11-21T05:36:53.793",
        "metrics": {
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            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 5.0,
                "confidentialityImpact": "NONE",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
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                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
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    "redhat_vex": {
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      "cve": "CVE-2020-7238",
      "id": "CVE-2020-7238",
      "initial_release_date": "2020-01-26T00:00:00+00:00",
      "product_status:fixed": "1830",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "3",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "netty: HTTP Request Smuggling due to Transfer-Encoding whitespace mishandling",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-7238.json",
      "version": "3"
    }
  }
}



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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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