Vulnerability-Lookup

GHSA-FX6X-7XGX-2WWP

Vulnerability from github – Published: 2022-05-24 17:19 – Updated: 2025-05-05 18:30

Details

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance.

Severity

7.4 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2020-13817"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-330"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-06-04T13:15:00Z",
    "severity": "MODERATE"
  },
  "details": "ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim\u0027s ntpd instance.",
  "id": "GHSA-fx6x-7xgx-2wwp",
  "modified": "2025-05-05T18:30:44Z",
  "published": "2022-05-24T17:19:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13817"
    },
    {
      "type": "WEB",
      "url": "https://bugs.ntp.org/show_bug.cgi?id=3596"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202007-12"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20200625-0004"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html"
    },
    {
      "type": "WEB",
      "url": "http://support.ntp.org/bin/view/Main/NtpBug3596"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2020-13817 (GCVE-0-2020-13817)

Vulnerability from cvelistv5 – Published: 2020-06-04 12:31 – Updated: 2025-05-05 17:07

Summary

Severity

5.9 (Medium)


                        
                          CVSS:3.0/AC:H/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 13:13 UTC

CWE

n/a
CWE-330 - Use of Insufficiently Random Values

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2319 records in the last 180 days details

References

7 references

URL	Tags
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://security.gentoo.org/glsa/202007-12	vendor-advisoryx_refsource_GENTOO
https://www.oracle.com/security-alerts/cpujan2022.html	x_refsource_MISC
http://support.ntp.org/bin/view/Main/NtpBug3596	x_refsource_MISC
https://bugs.ntp.org/show_bug.cgi?id=3596	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2020062…	x_refsource_CONFIRM

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          "dateUpdated": "2024-08-04T12:25:16.566Z",
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            ],
            "url": "http://support.ntp.org/bin/view/Main/NtpBug3596"
          },
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              "x_transferred"
            ],
            "url": "https://bugs.ntp.org/show_bug.cgi?id=3596"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20200625-0004/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
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              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.4,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
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                "timestamp": "2025-04-23T13:13:39.175323Z",
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          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        },
        {
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            "x_refsource_MISC"
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        },
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            "x_refsource_CONFIRM"
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          "url": "https://security.netapp.com/advisory/ntap-20200625-0004/"
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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

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