CVE-2017-8797 (GCVE-0-2017-8797)

Vulnerability from cvelistv5 – Published: 2017-07-02 17:00 – Updated: 2024-08-05 16:48
VLAI
Summary
The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operand in a UDP packet from a remote attacker. This type value is uninitialized upon encountering certain error conditions. This value is used as an array index for dereferencing, which leads to an OOPS and eventually a DoS of knfsd and a soft-lockup of the whole system.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2286 records in the last 180 days details
References
Date Public
2017-07-02 00:00
Show details on NVD website
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          {
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            "value": "El servidor NFSv4 en el kernel de Linux en versiones anteriores a la 4.11.3 no valida correctamente el tipo de dise\u00f1o al procesar los operandos NFSv4 pNFS GETDEVICEINFO o LAYOUTGET en un paquete UDP de un atacante remoto. Este valor de tipo no se inicializa al encontrarse ciertas condiciones de error. Este valor se emplea como \u00edndice de arrays para desreferenciar, lo que conduce a un error OOPS y, finalmente, a una DoS de knfsd y a un bloqueo parcial de todo el sistema."
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                "scope": "UNCHANGED",
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      "aggregate_severity": "Important",
      "current_release_date": "2026-06-28T11:15:57+00:00",
      "cve": "CVE-2017-8797",
      "id": "CVE-2017-8797",
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: NFSv4 server does not properly validate layout type when processing NFSv4 pNFS LAYOUTGET operand",
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      "cve": "CVE-2017-8797",
      "id": "CVE-2017-8797",
      "initial_release_date": "2023-02-15T04:45:51Z",
      "product_status:known_not_affected": "577",
      "product_status:recommended": "22",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2017-8797",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2017-8797.json",
      "version": "14"
    }
  }
}



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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

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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.

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    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.