CVE-2015-1798 (GCVE-0-2015-1798)

Vulnerability from cvelistv5 – Published: 2015-04-08 10:00 – Updated: 2024-08-06 04:54
VLAI
Summary
The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://www.securitytracker.com/id/1032032 vdb-entryx_refsource_SECTRACK
http://www.ubuntu.com/usn/USN-2567-1 vendor-advisoryx_refsource_UBUNTU
http://www.kb.cert.org/vuls/id/374268 third-party-advisoryx_refsource_CERT-VN
http://marc.info/?l=bugtraq&m=143213867103400&w=2 vendor-advisoryx_refsource_HP
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://support.ntp.org/bin/view/Main/SecurityNoti… x_refsource_CONFIRM
https://kc.mcafee.com/corporate/index?page=conten… x_refsource_CONFIRM
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://lists.opensuse.org/opensuse-updates/2015-0… vendor-advisoryx_refsource_SUSE
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
https://security.gentoo.org/glsa/201509-01 vendor-advisoryx_refsource_GENTOO
http://tools.cisco.com/security/center/viewAlert.… vendor-advisoryx_refsource_CISCO
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
http://www.securityfocus.com/bid/73951 vdb-entryx_refsource_BID
http://support.apple.com/kb/HT204942 x_refsource_CONFIRM
http://rhn.redhat.com/errata/RHSA-2015-1459.html vendor-advisoryx_refsource_REDHAT
http://tools.cisco.com/security/center/content/Ci… vendor-advisoryx_refsource_CISCO
http://bugs.ntp.org/show_bug.cgi?id=2779 x_refsource_CONFIRM
http://www.debian.org/security/2015/dsa-3223 vendor-advisoryx_refsource_DEBIAN
Date Public
2015-04-07 00:00
Show details on NVD website
To clipboard 

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        {
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          "tags": [
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          "url": "http://www.kb.cert.org/vuls/id/374268"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2015:202"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
        },
        {
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          "url": "http://www.securityfocus.com/bid/73951"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.securitytracker.com/id/1032032"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.ubuntu.com/usn/USN-2567-1"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10114"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://security.gentoo.org/glsa/201509-01"
        }
      ],
      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-17"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E538FCAE-3E2C-4EA8-A74F-ABF47652C15C",
                    "versionEndIncluding": "4.2.7p444",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC."
          },
          {
            "lang": "es",
            "value": "La caracter\u00edstica symmetric-key en la funci\u00f3n receive en ntp_proto.c en ntpd en NTP 4.x anterior a 4.2.8p2 requiere un MAC correcto \u00fanicamente si el campo MAC tiene una longitud que no sea cero, lo que facilita a atacantes man-in-the-middle falsificar paquetes mediante la omisi\u00f3n del MAC."
          }
        ],
        "id": "CVE-2015-1798",
        "lastModified": "2026-05-06T22:30:45.220",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "LOW",
              "cvssData": {
                "accessComplexity": "HIGH",
                "accessVector": "ADJACENT_NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 1.8,
                "confidentialityImpact": "NONE",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:A/AC:H/Au:N/C:N/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 3.2,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2015-04-08T10:59:04.610",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "http://bugs.ntp.org/show_bug.cgi?id=2779"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155863.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155864.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-updates/2015-04/msg00052.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://marc.info/?l=bugtraq\u0026m=143213867103400\u0026w=2"
          },
          {
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            "url": "http://rhn.redhat.com/errata/RHSA-2015-1459.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://support.apple.com/kb/HT204942"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd"
          },
          {
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            "url": "http://tools.cisco.com/security/center/viewAlert.x?alertId=38276"
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          {
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            "url": "http://www.debian.org/security/2015/dsa-3223"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
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              "US Government Resource"
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            "url": "http://www.kb.cert.org/vuls/id/374268"
          },
          {
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            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2015:202"
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            "url": "http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html"
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            "url": "http://www.securityfocus.com/bid/73951"
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            "url": "http://www.securitytracker.com/id/1032032"
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            "url": "http://bugs.ntp.org/show_bug.cgi?id=2779"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html"
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            "source": "af854a3a-2127-422b-91ae-364da2661108",
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          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.gentoo.org/glsa/201509-01"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-17"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T12:20:11+00:00",
      "cve": "CVE-2015-1798",
      "id": "CVE-2015-1798",
      "initial_release_date": "2015-04-07T00:00:00+00:00",
      "product_status:fixed": "328",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "ntp: ntpd accepts unauthenticated packets with symmetric key crypto",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-1798.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-01T02:34:06Z",
      "cve": "CVE-2015-1798",
      "id": "CVE-2015-1798",
      "initial_release_date": "2023-02-15T05:21:22Z",
      "product_status:known_not_affected": "3",
      "product_status:recommended": "95",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2015-1798",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2015-1798.json",
      "version": "11"
    }
  }
}



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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.



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.