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CVE-2021-46784 (GCVE-0-2021-46784)

Vulnerability from cvelistv5 – Published: 2022-07-17 00:00 – Updated: 2024-08-04 05:17
VLAI
Summary
In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T15:51:27+00:00",
      "cve": "CVE-2021-46784",
      "id": "CVE-2021-46784",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:fixed": "187",
      "product_status:known_affected": "4",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "squid: DoS when processing gopher server responses",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-46784.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-13T00:02:27Z",
      "cve": "CVE-2021-46784",
      "id": "CVE-2021-46784",
      "initial_release_date": "2023-02-15T03:35:56Z",
      "product_status:known_affected": "398",
      "product_status:recommended": "71",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-46784",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-46784.json",
      "version": "39"
    }
  }
}



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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

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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.


Detection rules are retrieved from Rulezet.


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