CVE-2015-1821 (GCVE-0-2015-1821)

Vulnerability from cvelistv5 – Published: 2015-04-16 14:00 – Updated: 2024-08-06 04:54
VLAI
Summary
Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://www.debian.org/security/2015/dsa-3222 vendor-advisoryx_refsource_DEBIAN
http://listengine.tuxfamily.org/chrony.tuxfamily.… mailing-listx_refsource_MLIST
http://www.securityfocus.com/bid/73955 vdb-entryx_refsource_BID
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
https://security.gentoo.org/glsa/201507-01 vendor-advisoryx_refsource_GENTOO
Date Public
2015-04-07 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T04:54:16.293Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "DSA-3222",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "http://www.debian.org/security/2015/dsa-3222"
          },
          {
            "name": "[chrony-announce] 20150407 chrony-1.31.1 released (security)",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html"
          },
          {
            "name": "73955",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/73955"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
          },
          {
            "name": "GLSA-201507-01",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201507-01"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2015-04-07T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2017-06-30T16:57:01.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "DSA-3222",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "http://www.debian.org/security/2015/dsa-3222"
        },
        {
          "name": "[chrony-announce] 20150407 chrony-1.31.1 released (security)",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html"
        },
        {
          "name": "73955",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/73955"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
        },
        {
          "name": "GLSA-201507-01",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/201507-01"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2015-1821",
    "datePublished": "2015-04-16T14:00:00.000Z",
    "dateReserved": "2015-02-17T00:00:00.000Z",
    "dateUpdated": "2024-08-06T04:54:16.293Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2015-1821",
      "date": "2026-09-27",
      "epss": "0.03414",
      "percentile": "0.88452"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:tuxfamily:chrony:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "CF48000B-8A0C-4280-ADA9-7A7B1F64AD1C",
                  "versionEndIncluding": "1.31",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "16F59A04-14CF-49E2-9973-645477EA09DA",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder."
        },
        {
          "lang": "es",
          "value": "Desbordamiento de buffer basado en memoria din\u00e1mica en chrony anterior a 1.31.1 permite a usuarios remotos autenticados causar una denegaci\u00f3n de servicio (ca\u00edda de chronyd) o posiblemente ejecutar c\u00f3digo arbitrario mediante la configuraci\u00f3n del acceso (1) NTP o (2) cmdmon con un tama\u00f1o subnet que resulta indivisible por cuatro y una direcci\u00f3n con un bit no cero en el restante de subnet."
        }
      ],
      "id": "CVE-2015-1821",
      "lastModified": "2024-11-21T02:26:13.080",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "MEDIUM",
            "cvssData": {
              "accessComplexity": "LOW",
              "accessVector": "NETWORK",
              "authentication": "SINGLE",
              "availabilityImpact": "PARTIAL",
              "baseScore": 6.5,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "PARTIAL",
              "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
              "version": "2.0"
            },
            "exploitabilityScore": 8.0,
            "impactScore": 6.4,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ]
      },
      "published": "2015-04-16T14:59:01.663",
      "references": [
        {
          "source": "secalert@redhat.com",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://www.debian.org/security/2015/dsa-3222"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://www.securityfocus.com/bid/73955"
        },
        {
          "source": "secalert@redhat.com",
          "url": "https://security.gentoo.org/glsa/201507-01"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.debian.org/security/2015/dsa-3222"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.securityfocus.com/bid/73955"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://security.gentoo.org/glsa/201507-01"
        }
      ],
      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-119"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:tuxfamily:chrony:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CF48000B-8A0C-4280-ADA9-7A7B1F64AD1C",
                    "versionEndIncluding": "1.31",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "16F59A04-14CF-49E2-9973-645477EA09DA",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder."
          },
          {
            "lang": "es",
            "value": "Desbordamiento de buffer basado en memoria din\u00e1mica en chrony anterior a 1.31.1 permite a usuarios remotos autenticados causar una denegaci\u00f3n de servicio (ca\u00edda de chronyd) o posiblemente ejecutar c\u00f3digo arbitrario mediante la configuraci\u00f3n del acceso (1) NTP o (2) cmdmon con un tama\u00f1o subnet que resulta indivisible por cuatro y una direcci\u00f3n con un bit no cero en el restante de subnet."
          }
        ],
        "id": "CVE-2015-1821",
        "lastModified": "2026-05-06T22:30:45.220",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "SINGLE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 6.5,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.0,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2015-04-16T14:59:01.663",
        "references": [
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.debian.org/security/2015/dsa-3222"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.securityfocus.com/bid/73955"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://security.gentoo.org/glsa/201507-01"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.debian.org/security/2015/dsa-3222"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/73955"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.gentoo.org/glsa/201507-01"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-119"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-27T09:25:37+00:00",
      "cve": "CVE-2015-1821",
      "id": "CVE-2015-1821",
      "initial_release_date": "2015-04-07T00:00:00+00:00",
      "product_status:fixed": "20",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "chrony: Heap out of bound write in address filter",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-1821.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T02:33:57Z",
      "cve": "CVE-2015-1821",
      "id": "CVE-2015-1821",
      "initial_release_date": "2023-02-15T05:21:18Z",
      "product_status:known_not_affected": "122",
      "product_status:recommended": "1",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2015-1821",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2015-1821.json",
      "version": "7"
    }
  }
}



Log in or create an account to share your comment.




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.