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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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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T06:58:04+00:00",
      "cve": "CVE-2019-18282",
      "id": "CVE-2019-18282",
      "initial_release_date": "2019-10-22T00:00:00+00:00",
      "product_status:fixed": "335",
      "product_status:known_affected": "43",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: The flow_dissector feature allows device tracking",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-18282.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T02:33:33Z",
      "cve": "CVE-2019-18282",
      "id": "CVE-2019-18282",
      "initial_release_date": "2023-02-15T04:07:11Z",
      "product_status:known_not_affected": "445",
      "product_status:recommended": "33",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-18282",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-18282.json",
      "version": "32"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.


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.