{
  "threat_severity" : "Moderate",
  "public_date" : "2011-12-28T00:00:00Z",
  "bugzilla" : {
    "description" : "ruby: hash table collisions CPU usage DoS (oCERT-2011-003)",
    "id" : "750564",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=750564"
  },
  "cvss" : {
    "cvss_base_score" : "5.0",
    "cvss_scoring_vector" : "AV:N/AC:L/Au:N/C:N/I:N/A:P",
    "status" : "verified"
  },
  "details" : [ "Ruby (aka CRuby) before 1.8.7-p357 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table." ],
  "acknowledgement" : "Red Hat would like to thank oCERT for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 4",
    "release_date" : "2012-01-30T00:00:00Z",
    "advisory" : "RHSA-2012:0070",
    "cpe" : "cpe:/o:redhat:enterprise_linux:4",
    "package" : "ruby-0:1.8.1-18.el4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2012-01-30T00:00:00Z",
    "advisory" : "RHSA-2012:0070",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "ruby-0:1.8.5-22.el5_7.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2012-01-30T00:00:00Z",
    "advisory" : "RHSA-2012:0069",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "ruby-0:1.8.7.352-4.el6_2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2011-4815\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-4815" ],
  "name" : "CVE-2011-4815",
  "csaw" : false
}