{
  "threat_severity" : "Moderate",
  "public_date" : "2011-06-06T00:00:00Z",
  "bugzilla" : {
    "description" : "squid: Invalid free by processing CNAME DNS record pointing to another CNAME record pointing to an empty A-record",
    "id" : "750316",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=750316"
  },
  "cvss" : {
    "cvss_base_score" : "3.3",
    "cvss_scoring_vector" : "AV:A/AC:L/Au:N/C:N/I:N/A:P",
    "status" : "verified"
  },
  "details" : [ "The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause a denial of service (daemon abort) via a DNS reply containing a CNAME record that references another CNAME record that contains an empty A record." ],
  "statement" : "This issue did not affect the versions of squid as shipped with Red Hat Enterprise Linux 4 and 5 as they did not include IPv6 support. This issue was introduced with the addition of IPv6 support in Squid 3.1 (in the changes made to the idnsGrokReply function).",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2011-12-06T00:00:00Z",
    "advisory" : "RHSA-2011:1791",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "squid-7:3.1.10-1.el6_2.1"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 4",
    "fix_state" : "Not affected",
    "package_name" : "squid",
    "cpe" : "cpe:/o:redhat:enterprise_linux:4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "squid",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2011-4096\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-4096" ],
  "name" : "CVE-2011-4096",
  "csaw" : false
}