FKIE_CVE-2012-4502

Vulnerability from fkie_nvd - Published: 2013-11-05 21:55 - Updated: 2026-06-16 23:45
Severity
Summary
Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow. NOTE: versions 1.27 and 1.28 do not require authentication to exploit.

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
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      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "7E236713-16ED-4ED1-9210-84C3F8F9E03F",
              "versionEndIncluding": "1.28",
              "vulnerable": true
            },
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              "vulnerable": true
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              "vulnerable": true
            },
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            },
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              "criteria": "cpe:2.3:a:tuxfamily:chrony:1.23.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "0C0EFE21-9119-4A5A-9627-4AF9A4C1A3A3",
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              "matchCriteriaId": "628AA82E-CED1-439A-BCA2-051D6B6F3F10",
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            },
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              "matchCriteriaId": "C9057824-14B1-4F47-A47B-785DD4535E07",
              "vulnerable": true
            },
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              "vulnerable": true
            },
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              "matchCriteriaId": "EFE3E748-3834-463F-8C67-DAC51C2BF761",
              "vulnerable": true
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              "vulnerable": true
            },
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              "vulnerable": true
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              "vulnerable": true
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          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow.  NOTE: versions 1.27 and 1.28 do not require authentication to exploit."
    },
    {
      "lang": "es",
      "value": "M\u00faltiples desbordamientos de enteros en pktlength.c en Chrony anterior a 1.29 permite a atacantes remotos provocar una denegaci\u00f3n de servicio (ca\u00edda) a trav\u00e9s de un (1) REQ_SUBNETS_ACCESSED manipulado o (2) comando  REQ_CLIENT_ACCESSES a la  funci\u00f3n PKL_CommandLength o la manipulaci\u00f3n de  (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES), (5) RPY_CLIENT_ACCESSES_BY_INDEX, o (6) Respuesta del comando RPY_MANUAL_LIST por la funci\u00f3n PKL_ReplyLength, lo que provoca un  desbordamiento de buffer o lectura fuera de l\u00edmite. NOTA: Las versiones 1.27 y 1.28 no requieren autenticaci\u00f3n para  su  explotaci\u00f3n."
    }
  ],
  "id": "CVE-2012-4502",
  "lastModified": "2026-06-16T23:45:13.097",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2013-11-05T21:55:08.047",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=7712455d9aa33d0db0945effaa07e900b85987b1"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://permalink.gmane.org/gmane.comp.time.chrony.announce/15"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch"
      ],
      "url": "http://seclists.org/oss-sec/2013/q3/332"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.debian.org/security/2013/dsa-2760"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=846392"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=7712455d9aa33d0db0945effaa07e900b85987b1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://permalink.gmane.org/gmane.comp.time.chrony.announce/15"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "http://seclists.org/oss-sec/2013/q3/332"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2013/dsa-2760"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=846392"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-189"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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