Vulnerability-Lookup

ubuntu-cve-2018-7184

Vulnerability from osv_ubuntu

Published

2018-03-06 00:00

Modified

2025-09-08 16:44

Summary

Details

ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.

Severity

7.5 (High)


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

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2018-7184	REPORT
	http://www.kb.cert.org/vuls/id/961909	REPORT
	http://support.ntp.org/bin/view/Main/SecurityNoti…	REPORT
	https://ubuntu.com/security/notices/USN-3707-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2018-7184	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ntp",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
          },
          {
            "binary_name": "ntpdate",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
          },
          {
            "binary_name": "sntp",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "ntp",
        "purl": "pkg:deb/ubuntu/ntp@1:4.2.8p10+dfsg-5ubuntu7.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:4.2.8p10+dfsg-5ubuntu3",
        "1:4.2.8p10+dfsg-5ubuntu4",
        "1:4.2.8p10+dfsg-5ubuntu5",
        "1:4.2.8p10+dfsg-5ubuntu6",
        "1:4.2.8p10+dfsg-5ubuntu7"
      ]
    }
  ],
  "aliases": [],
  "details": "ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the \"received\" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.",
  "id": "UBUNTU-CVE-2018-7184",
  "modified": "2025-09-08T16:44:47Z",
  "published": "2018-03-06T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-7184"
    },
    {
      "type": "REPORT",
      "url": "http://www.kb.cert.org/vuls/id/961909"
    },
    {
      "type": "REPORT",
      "url": "http://support.ntp.org/bin/view/Main/SecurityNotice#February_2018_ntp_4_2_8p11_NTP_S"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3707-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-7184"
    }
  ],
  "related": [
    "USN-3707-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-7184"
  ]
}

CVE-2018-7184 (GCVE-0-2018-7184)

Vulnerability from cvelistv5 – Published: 2018-03-06 20:00 – Updated: 2024-08-05 06:24

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre

References

10 references

URL	Tags
http://packetstormsecurity.com/files/146631/Slack…	x_refsource_MISC
http://www.securityfocus.com/bid/103192	vdb-entryx_refsource_BID
https://security.gentoo.org/glsa/201805-12	vendor-advisoryx_refsource_GENTOO
https://security.FreeBSD.org/advisories/FreeBSD-S…	vendor-advisoryx_refsource_FREEBSD
https://security.netapp.com/advisory/ntap-2018062…	x_refsource_CONFIRM
http://www.securityfocus.com/archive/1/541824/100…	mailing-listx_refsource_BUGTRAQ
http://support.ntp.org/bin/view/Main/NtpBug3453	x_refsource_CONFIRM
https://usn.ubuntu.com/3707-1/	vendor-advisoryx_refsource_UBUNTU
https://www.synology.com/support/security/Synolog…	x_refsource_CONFIRM
https://support.hpe.com/hpsc/doc/public/display?d…	x_refsource_CONFIRM

Date Public

2018-02-28 00:00

Show details on NVD website

JSON

To clipboard

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}

usn-3707-1

Vulnerability from osv_ubuntu

Published

2018-07-09 16:48

Modified

2026-02-10 04:41

Summary

ntp vulnerabilities

Details

Yihan Lian discovered that NTP incorrectly handled certain malformed mode 6 packets. A remote attacker could possibly use this issue to cause ntpd to crash, resulting in a denial of service. This issue only affected Ubuntu 17.10 and Ubuntu 18.04 LTS. (CVE-2018-7182)

Michael Macnair discovered that NTP incorrectly handled certain responses. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2018-7183)

Miroslav Lichvar discovered that NTP incorrectly handled certain zero-origin timestamps. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 17.10 and Ubuntu 18.04 LTS. (CVE-2018-7184)

Miroslav Lichvar discovered that NTP incorrectly handled certain zero-origin timestamps. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2018-7185)

References

URL

Type

	https://ubuntu.com/security/notices/USN-3707-1	ADVISORY
	https://ubuntu.com/security/CVE-2018-7182	REPORT
	https://ubuntu.com/security/CVE-2018-7183	REPORT
	https://ubuntu.com/security/CVE-2018-7184	REPORT
	https://ubuntu.com/security/CVE-2018-7185	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-7183",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-7185",
              "severity": [
                {
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                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ntp",
            "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.13"
          },
          {
            "binary_name": "ntpdate",
            "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.13"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "ntp",
        "purl": "pkg:deb/ubuntu/ntp@1:4.2.6.p5+dfsg-3ubuntu2.14.04.13?arch=source\u0026distro=trusty"
      },
      "ranges": [
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        "1:4.2.6.p5+dfsg-3ubuntu2.14.04.3",
        "1:4.2.6.p5+dfsg-3ubuntu2.14.04.5",
        "1:4.2.6.p5+dfsg-3ubuntu2.14.04.6",
        "1:4.2.6.p5+dfsg-3ubuntu2.14.04.7",
        "1:4.2.6.p5+dfsg-3ubuntu2.14.04.8",
        "1:4.2.6.p5+dfsg-3ubuntu2.14.04.10",
        "1:4.2.6.p5+dfsg-3ubuntu2.14.04.11",
        "1:4.2.6.p5+dfsg-3ubuntu2.14.04.12"
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                },
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              ]
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                },
                {
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              ]
            }
          ],
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        }
      },
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          },
          {
            "binary_name": "ntpdate",
            "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ntp",
        "purl": "pkg:deb/ubuntu/ntp@1:4.2.8p4+dfsg-3ubuntu5.9?arch=source\u0026distro=xenial"
      },
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        "1:4.2.8p4+dfsg-3ubuntu5.6",
        "1:4.2.8p4+dfsg-3ubuntu5.7",
        "1:4.2.8p4+dfsg-3ubuntu5.8"
      ]
    },
    {
      "database_specific": {
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              "id": "CVE-2018-7182",
              "severity": [
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                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-7183",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-7184",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-7185",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ntp",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
          },
          {
            "binary_name": "ntpdate",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
          },
          {
            "binary_name": "sntp",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "ntp",
        "purl": "pkg:deb/ubuntu/ntp@1:4.2.8p10+dfsg-5ubuntu7.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:4.2.8p10+dfsg-5ubuntu7.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:4.2.8p10+dfsg-5ubuntu3",
        "1:4.2.8p10+dfsg-5ubuntu4",
        "1:4.2.8p10+dfsg-5ubuntu5",
        "1:4.2.8p10+dfsg-5ubuntu6",
        "1:4.2.8p10+dfsg-5ubuntu7"
      ]
    }
  ],
  "aliases": [],
  "details": "Yihan Lian discovered that NTP incorrectly handled certain malformed mode 6\npackets. A remote attacker could possibly use this issue to cause ntpd to\ncrash, resulting in a denial of service. This issue only affected Ubuntu\n17.10 and Ubuntu 18.04 LTS. (CVE-2018-7182)\n\nMichael Macnair discovered that NTP incorrectly handled certain responses.\nA remote attacker could possibly use this issue to execute arbitrary code.\n(CVE-2018-7183)\n\nMiroslav Lichvar discovered that NTP incorrectly handled certain\nzero-origin timestamps. A remote attacker could possibly use this issue to\ncause a denial of service. This issue only affected Ubuntu 17.10 and Ubuntu\n18.04 LTS. (CVE-2018-7184)\n\nMiroslav Lichvar discovered that NTP incorrectly handled certain\nzero-origin timestamps. A remote attacker could possibly use this issue to\ncause a denial of service. (CVE-2018-7185)\n",
  "id": "USN-3707-1",
  "modified": "2026-02-10T04:41:23Z",
  "published": "2018-07-09T16:48:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3707-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-7182"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-7183"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-7184"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-7185"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "ntp vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2018-7182",
    "UBUNTU-CVE-2018-7183",
    "UBUNTU-CVE-2018-7184",
    "UBUNTU-CVE-2018-7185"
  ]
}

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.

Action not permitted

ubuntu-cve-2018-7184

Vulnerability from osv_ubuntu

CVE-2018-7184 (GCVE-0-2018-7184)

usn-3707-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature