{
  "threat_severity" : "Moderate",
  "public_date" : "2009-12-08T00:00:00Z",
  "bugzilla" : {
    "description" : "ntpd: DoS with mode 7 packets (VU#568372)",
    "id" : "531213",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=531213"
  },
  "cvss" : {
    "cvss_base_score" : "5.0",
    "cvss_scoring_vector" : "AV:N/AC:L/Au:N/C:N/I:N/A:P",
    "status" : "verified"
  },
  "details" : [ "ntp_request.c in ntpd in NTP before 4.2.4p8, and 4.2.5, allows remote attackers to cause a denial of service (CPU and bandwidth consumption) by using MODE_PRIVATE to send a spoofed (1) request or (2) response packet that triggers a continuous exchange of MODE_PRIVATE error responses between two NTP daemons." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 3",
    "release_date" : "2009-12-08T00:00:00Z",
    "advisory" : "RHSA-2009:1651",
    "cpe" : "cpe:/o:redhat:enterprise_linux:3",
    "package" : "ntp-0:4.1.2-6.el3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 4",
    "release_date" : "2009-12-08T00:00:00Z",
    "advisory" : "RHSA-2009:1648",
    "cpe" : "cpe:/o:redhat:enterprise_linux:4",
    "package" : "ntp-0:4.2.0.a.20040617-8.el4_8.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2009-12-08T00:00:00Z",
    "advisory" : "RHSA-2009:1648",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "ntp-0:4.2.2p1-9.el5_4.1"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2009-3563\nhttps://nvd.nist.gov/vuln/detail/CVE-2009-3563" ],
  "name" : "CVE-2009-3563",
  "csaw" : false
}