Vulnerability-Lookup

OESA-2023-1282 (CVE-2023-26551)

Vulnerability from osv_openeuler – Published: 2023-05-19 11:05 – Updated: 2026-08-06 11:05 – Source website

Summary

ntp security update

Details

NTP is a protocol designed to synchronize the clocks of computers over a network, NTP version 4, a significant revision of the previous NTP standard, is the current development version. It is formalized by RFCs released by the IETF.

Security Fix(es):

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write in the cp<cpdec while loop. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.(CVE-2023-26551)

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a '\0' character. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.(CVE-2023-26554)

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when copying the trailing number. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.(CVE-2023-26553)

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a decimal point. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.(CVE-2023-26552)

Severity

5.6 (Medium)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-26551	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-26554	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-26553	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-26552	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "ntp-debugsource-4.2.8p14-7.oe1.aarch64.rpm",
          "ntp-4.2.8p14-7.oe1.aarch64.rpm",
          "ntp-debuginfo-4.2.8p14-7.oe1.aarch64.rpm"
        ],
        "noarch": [
          "ntp-help-4.2.8p14-7.oe1.noarch.rpm",
          "ntp-perl-4.2.8p14-7.oe1.noarch.rpm"
        ],
        "src": [
          "ntp-4.2.8p14-7.oe1.src.rpm"
        ],
        "x86_64": [
          "ntp-4.2.8p14-7.oe1.x86_64.rpm",
          "ntp-debugsource-4.2.8p14-7.oe1.x86_64.rpm",
          "ntp-debuginfo-4.2.8p14-7.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "ntp",
        "purl": "pkg:rpm/openEuler/ntp\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.2.8p14-7.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "ntp-4.2.8p14-7.oe1.aarch64.rpm",
          "ntp-debuginfo-4.2.8p14-7.oe1.aarch64.rpm",
          "ntp-debugsource-4.2.8p14-7.oe1.aarch64.rpm"
        ],
        "noarch": [
          "ntp-help-4.2.8p14-7.oe1.noarch.rpm",
          "ntp-perl-4.2.8p14-7.oe1.noarch.rpm"
        ],
        "src": [
          "ntp-4.2.8p14-7.oe1.src.rpm"
        ],
        "x86_64": [
          "ntp-4.2.8p14-7.oe1.x86_64.rpm",
          "ntp-debugsource-4.2.8p14-7.oe1.x86_64.rpm",
          "ntp-debuginfo-4.2.8p14-7.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "ntp",
        "purl": "pkg:rpm/openEuler/ntp\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.2.8p14-7.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "ntp-4.2.8p15-7.oe2203.aarch64.rpm",
          "ntp-debugsource-4.2.8p15-7.oe2203.aarch64.rpm",
          "ntp-debuginfo-4.2.8p15-7.oe2203.aarch64.rpm",
          "ntp-debugsource-4.2.8p15-9.oe2203sp1.aarch64.rpm",
          "ntp-4.2.8p15-9.oe2203sp1.aarch64.rpm",
          "ntp-debuginfo-4.2.8p15-9.oe2203sp1.aarch64.rpm"
        ],
        "noarch": [
          "ntp-help-4.2.8p15-7.oe2203.noarch.rpm",
          "ntp-perl-4.2.8p15-7.oe2203.noarch.rpm",
          "ntp-help-4.2.8p15-9.oe2203sp1.noarch.rpm",
          "ntp-perl-4.2.8p15-9.oe2203sp1.noarch.rpm"
        ],
        "src": [
          "ntp-4.2.8p15-7.oe2203.src.rpm",
          "ntp-4.2.8p15-9.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "ntp-debugsource-4.2.8p15-7.oe2203.x86_64.rpm",
          "ntp-4.2.8p15-7.oe2203.x86_64.rpm",
          "ntp-debuginfo-4.2.8p15-7.oe2203.x86_64.rpm",
          "ntp-debuginfo-4.2.8p15-9.oe2203sp1.x86_64.rpm",
          "ntp-4.2.8p15-9.oe2203sp1.x86_64.rpm",
          "ntp-debugsource-4.2.8p15-9.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS",
        "name": "ntp",
        "purl": "pkg:rpm/openEuler/ntp\u0026distro=openEuler-22.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.2.8p15-9.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "ntp-debugsource-4.2.8p15-9.oe2203sp1.aarch64.rpm",
          "ntp-4.2.8p15-9.oe2203sp1.aarch64.rpm",
          "ntp-debuginfo-4.2.8p15-9.oe2203sp1.aarch64.rpm"
        ],
        "noarch": [
          "ntp-help-4.2.8p15-9.oe2203sp1.noarch.rpm",
          "ntp-perl-4.2.8p15-9.oe2203sp1.noarch.rpm"
        ],
        "src": [
          "ntp-4.2.8p15-9.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "ntp-debuginfo-4.2.8p15-9.oe2203sp1.x86_64.rpm",
          "ntp-4.2.8p15-9.oe2203sp1.x86_64.rpm",
          "ntp-debugsource-4.2.8p15-9.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "ntp",
        "purl": "pkg:rpm/openEuler/ntp\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.2.8p15-9.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "NTP is a protocol designed to synchronize the clocks of computers over a network, NTP version 4, a significant revision of the previous NTP standard, is the current development version. It is formalized by RFCs released by the IETF.\r\n\r\nSecurity Fix(es):\r\n\r\nmstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write in the cp\u0026lt;cpdec while loop. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.(CVE-2023-26551)\r\n\r\nmstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a \u0026apos;\\0\u0026apos; character. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.(CVE-2023-26554)\r\n\r\nmstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when copying the trailing number. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.(CVE-2023-26553)\r\n\r\nmstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a decimal point. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.(CVE-2023-26552)",
  "id": "OESA-2023-1282",
  "modified": "2026-08-06T11:05:45Z",
  "published": "2023-05-19T11:05:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1282"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26551"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26554"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26553"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26552"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ntp security update",
  "upstream": [
    "CVE-2023-26551",
    "CVE-2023-26554",
    "CVE-2023-26553",
    "CVE-2023-26552"
  ]
}

CVE-2023-26551 (GCVE-0-2023-26551)

Vulnerability from cvelistv5 – Published: 2023-04-11 00:00 – Updated: 2025-02-11 15:32

Summary

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write in the cp<cpdec while loop. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.

Severity

5.6 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-11 15:31 UTC

CWE

n/a
CWE-787 - Out-of-bounds Write

Assigner

mitre mitre root

References

2 references

URL	Tags
https://github.com/spwpun/ntp-4.2.8p15-cves/blob/…
https://github.com/spwpun/ntp-4.2.8p15-cves/issue…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:53:53.410Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26551"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 5.6,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-26551",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-11T15:31:32.628394Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-787",
                "description": "CWE-787 Out-of-bounds Write",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-11T15:32:41.155Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write in the cp\u003ccpdec while loop. An adversary may be able to attack a client ntpq process, but cannot attack ntpd."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-04-13T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26551"
        },
        {
          "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-26551",
    "datePublished": "2023-04-11T00:00:00.000Z",
    "dateReserved": "2023-02-25T00:00:00.000Z",
    "dateUpdated": "2025-02-11T15:32:41.155Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

CVE-2023-26552 (GCVE-0-2023-26552)

Vulnerability from cvelistv5 – Published: 2023-04-11 00:00 – Updated: 2025-02-11 15:30

Summary

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a decimal point. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.

Severity

5.6 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-11 15:29 UTC

CWE

n/a
CWE-787 - Out-of-bounds Write

Assigner

mitre mitre root

References

2 references

URL	Tags
https://github.com/spwpun/ntp-4.2.8p15-cves/blob/…
https://github.com/spwpun/ntp-4.2.8p15-cves/issue…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:53:54.282Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26552"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 5.6,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-26552",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-11T15:29:15.574202Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-787",
                "description": "CWE-787 Out-of-bounds Write",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-11T15:30:15.235Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a decimal point. An adversary may be able to attack a client ntpq process, but cannot attack ntpd."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-04-13T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26552"
        },
        {
          "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-26552",
    "datePublished": "2023-04-11T00:00:00.000Z",
    "dateReserved": "2023-02-25T00:00:00.000Z",
    "dateUpdated": "2025-02-11T15:30:15.235Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

CVE-2023-26553 (GCVE-0-2023-26553)

Vulnerability from cvelistv5 – Published: 2023-04-11 00:00 – Updated: 2025-02-11 15:27

Summary

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when copying the trailing number. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.

Severity

5.6 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-11 15:25 UTC

CWE

n/a
CWE-787 - Out-of-bounds Write

Assigner

mitre mitre root

References

2 references

URL	Tags
https://github.com/spwpun/ntp-4.2.8p15-cves/blob/…
https://github.com/spwpun/ntp-4.2.8p15-cves/issue…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:53:54.281Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26553"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 5.6,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-26553",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-11T15:25:53.481955Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-787",
                "description": "CWE-787 Out-of-bounds Write",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-11T15:27:09.680Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when copying the trailing number. An adversary may be able to attack a client ntpq process, but cannot attack ntpd."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-04-13T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26553"
        },
        {
          "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-26553",
    "datePublished": "2023-04-11T00:00:00.000Z",
    "dateReserved": "2023-02-25T00:00:00.000Z",
    "dateUpdated": "2025-02-11T15:27:09.680Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

CVE-2023-26554 (GCVE-0-2023-26554)

Vulnerability from cvelistv5 – Published: 2023-04-11 00:00 – Updated: 2025-02-11 15:26

Summary

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a '\0' character. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.

Severity

5.6 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-11 15:26 UTC

CWE

n/a
CWE-787 - Out-of-bounds Write

Assigner

mitre mitre root

References

2 references

URL	Tags
https://github.com/spwpun/ntp-4.2.8p15-cves/blob/…
https://github.com/spwpun/ntp-4.2.8p15-cves/issue…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:53:54.436Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26554"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 5.6,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-26554",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-11T15:26:09.398238Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-787",
                "description": "CWE-787 Out-of-bounds Write",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-11T15:26:14.067Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a \u0027\\0\u0027 character. An adversary may be able to attack a client ntpq process, but cannot attack ntpd."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-04-13T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26554"
        },
        {
          "url": "https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-26554",
    "datePublished": "2023-04-11T00:00:00.000Z",
    "dateReserved": "2023-02-25T00:00:00.000Z",
    "dateUpdated": "2025-02-11T15:26:14.067Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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.

Action not permitted

OESA-2023-1282 (CVE-2023-26551)

CVE-2023-26551 (GCVE-0-2023-26551)

CVE-2023-26552 (GCVE-0-2023-26552)

CVE-2023-26553 (GCVE-0-2023-26553)

CVE-2023-26554 (GCVE-0-2023-26554)

Tags

Sightings

Nomenclature

Related by attack behaviour