{
  "threat_severity" : "Moderate",
  "public_date" : "2009-11-04T00:00:00Z",
  "bugzilla" : {
    "description" : "mysql: client SSL certificate verification flaw",
    "id" : "541233",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=541233"
  },
  "cvss" : {
    "cvss_base_score" : "2.9",
    "cvss_scoring_vector" : "AV:A/AC:M/Au:N/C:N/I:P/A:N",
    "status" : "verified"
  },
  "details" : [ "The vio_verify_callback function in viosslfactories.c in MySQL 5.0.x before 5.0.88 and 5.1.x before 5.1.41, when OpenSSL is used, accepts a value of zero for the depth of X.509 certificates, which allows man-in-the-middle attackers to spoof arbitrary SSL-based MySQL servers via a crafted certificate, as demonstrated by a certificate presented by a server linked against the yaSSL library." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2010-02-16T00:00:00Z",
    "advisory" : "RHSA-2010:0109",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "mysql-0:5.0.77-4.el5_4.2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2009-4028\nhttps://nvd.nist.gov/vuln/detail/CVE-2009-4028" ],
  "name" : "CVE-2009-4028",
  "csaw" : false
}