{
  "threat_severity" : "Moderate",
  "public_date" : "2009-01-07T00:00:00Z",
  "bugzilla" : {
    "description" : "ntp incorrectly checks for malformed signatures",
    "id" : "476807",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=476807"
  },
  "cvss" : {
    "cvss_base_score" : "4.3",
    "cvss_scoring_vector" : "AV:N/AC:M/Au:N/C:P/I:N/A:N",
    "status" : "verified"
  },
  "details" : [ "NTP 4.2.4 before 4.2.4p5 and 4.2.5 before 4.2.5p150 does not properly check the return value from the OpenSSL EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys, a similar vulnerability to CVE-2008-5077." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 4",
    "release_date" : "2009-01-29T00:00:00Z",
    "advisory" : "RHSA-2009:0046",
    "cpe" : "cpe:/o:redhat:enterprise_linux:4",
    "package" : "ntp-0:4.2.0.a.20040617-8.el4_7.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2009-01-29T00:00:00Z",
    "advisory" : "RHSA-2009:0046",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "ntp-0:4.2.2p1-9.el5_3.1"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2009-0021\nhttps://nvd.nist.gov/vuln/detail/CVE-2009-0021" ],
  "name" : "CVE-2009-0021",
  "csaw" : false
}