CVE-2019-18282 (GCVE-0-2019-18282)

Vulnerability from cvelistv5 – Published: 2020-01-16 15:22 – Updated: 2024-08-05 01:47
VLAI
Summary
The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. The hashrnd value remains the same starting from boot time, and can be inferred by an attacker. This affects net/core/flow_dissector.c and related code.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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            "value": "La funci\u00f3n flow_dissector en el kernel de Linux 4.3 a 5.x anterior a la versi\u00f3n 5.3.10 tiene una vulnerabilidad de seguimiento del dispositivo, tambi\u00e9n conocida como CID-55667441c84f. Esto ocurre porque la etiqueta de flujo autom\u00e1tico de un paquete UDP IPv6 se basa en un valor hashrnd de 32 bits como secreto y porque se usa jhash (en lugar de siphash). El valor hashrnd permanece igual a partir del tiempo de arranque, y puede ser inferido por un atacante. Esto afecta a net / core / flow_dissector.c y al c\u00f3digo relacionado."
          }
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        "id": "CVE-2019-18282",
        "lastModified": "2024-11-21T04:32:58.140",
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      "cve": "CVE-2019-18282",
      "id": "CVE-2019-18282",
      "initial_release_date": "2019-10-22T00:00:00+00:00",
      "product_status:fixed": "335",
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      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-18282.json",
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  }
}



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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.



Related by attack behaviour

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.