{
  "threat_severity" : "Moderate",
  "public_date" : "2016-05-06T00:00:00Z",
  "bugzilla" : {
    "description" : "squid: Header Smuggling issue in HTTP Request processing",
    "id" : "1334241",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1334241"
  },
  "cvss" : {
    "cvss_base_score" : "4.0",
    "cvss_scoring_vector" : "AV:N/AC:H/Au:N/C:N/I:P/A:P",
    "status" : "verified"
  },
  "cwe" : "CWE-20",
  "details" : [ "mime_header.cc in Squid before 3.5.18 allows remote attackers to bypass intended same-origin restrictions and possibly conduct cache-poisoning attacks via a crafted HTTP Host header, aka a \"header smuggling\" issue.", "An input validation flaw was found in Squid's mime_get_header_field() function, which is used to search for headers within HTTP requests. An attacker could send an HTTP request from the client side with specially crafted header Host header that bypasses same-origin security protections, causing Squid operating as interception or reverse-proxy to contact the wrong origin server. It could also be used for cache poisoning for client not following RFC 7230." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2016-05-31T00:00:00Z",
    "advisory" : "RHSA-2016:1138",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "squid-7:3.1.23-16.el6_8.4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2016-05-31T00:00:00Z",
    "advisory" : "RHSA-2016:1140",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "squid34-7:3.4.14-9.el6_8.3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2016-05-31T00:00:00Z",
    "advisory" : "RHSA-2016:1139",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "squid-7:3.3.8-26.el7_2.3"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Will not fix",
    "package_name" : "squid",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2016-4554\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-4554\nhttp://www.squid-cache.org/Advisories/SQUID-2016_8.txt" ],
  "name" : "CVE-2016-4554",
  "csaw" : false
}