CVE-2020-8277 (GCVE-0-2020-8277)

Vulnerability from cvelistv5 – Published: 2020-11-19 00:32 – Updated: 2025-04-30 22:24
VLAI
Summary
A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in versions < 15.2.1, < 14.15.1, and < 12.19.1 by getting the application to resolve a DNS record with a larger number of responses. This is fixed in 15.2.1, 14.15.1, and 12.19.1.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-400 - Denial of Service (CWE-400)
Assigner
References
Impacted products
Vendor Product Version
NodeJS Node Affected: 4.0 , < 4.* (semver)
Affected: 5.0 , < 5.* (semver)
Affected: 6.0 , < 6.* (semver)
Affected: 7.0 , < 7.* (semver)
Affected: 8.0 , < 8.* (semver)
Affected: 9.0 , < 9.* (semver)
Affected: 11.0 , < 11.* (semver)
Affected: 12.0 , < 12.19.1 (semver)
Affected: 13.0 , < 13.* (semver)
Affected: 14.0 , < 14.15.1 (semver)
Affected: 15.0 , < 15.2.1 (semver)
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      "sourceIdentifier": "support@hackerone.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"support@hackerone.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-400\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-400\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-8277\",\"sourceIdentifier\":\"support@hackerone.com\",\"published\":\"2020-11-19T01:15:12.763\",\"lastModified\":\"2024-11-21T05:38:38.383\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in versions \u003c 15.2.1, \u003c 14.15.1, and \u003c 12.19.1 by getting the application to resolve a DNS record with a larger number of responses. 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Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuoct2021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:32:07+00:00",
      "cve": "CVE-2020-8277",
      "id": "CVE-2020-8277",
      "initial_release_date": "2020-11-12T00:00:00+00:00",
      "product_status:fixed": "156",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "c-ares: ares_parse_{a,aaaa}_reply() insufficient naddrttls validation DoS",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-8277.json",
      "version": "3"
    }
  }
}



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Tags
Taxonomy of the tags.





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.