ubuntu-cve-2020-15025
Vulnerability from osv_ubuntu
Published
2020-06-24 19:15
Modified
2025-09-08 16:46
Summary
Details

ntpd in ntp 4.2.8 before 4.2.8p15 and 4.3.x before 4.3.101 allows remote attackers to cause a denial of service (memory consumption) by sending packets, because memory is not freed in situations where a CMAC key is used and associated with a CMAC algorithm in the ntp.keys file.

Severity
4.4 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ntp",
            "binary_version": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1"
          },
          {
            "binary_name": "ntpdate",
            "binary_version": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1"
          },
          {
            "binary_name": "sntp",
            "binary_version": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "ntp",
        "purl": "pkg:deb/ubuntu/ntp@1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:4.2.8p12+dfsg-3ubuntu2",
        "1:4.2.8p12+dfsg-3ubuntu3",
        "1:4.2.8p12+dfsg-3ubuntu4",
        "1:4.2.8p12+dfsg-3ubuntu4.20.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "ntpd in ntp 4.2.8 before 4.2.8p15 and 4.3.x before 4.3.101 allows remote attackers to cause a denial of service (memory consumption) by sending packets, because memory is not freed in situations where a CMAC key is used and associated with a CMAC algorithm in the ntp.keys file.",
  "id": "UBUNTU-CVE-2020-15025",
  "modified": "2025-09-08T16:46:13Z",
  "published": "2020-06-24T19:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-15025"
    },
    {
      "type": "REPORT",
      "url": "https://support.ntp.org/bin/view/Main/NtpBug3661"
    },
    {
      "type": "REPORT",
      "url": "https://support.ntp.org/bin/view/Main/SecurityNotice#June_2020_ntp_4_2_8p15_NTP_Relea"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.ntp.org/show_bug.cgi?id=3661"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.gentoo.org/729458"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5175-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-15025"
    }
  ],
  "related": [
    "USN-5175-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-15025"
  ],
  "withdrawn": "2025-10-07T04:47:32Z"
}



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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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