{
  "threat_severity" : "Moderate",
  "public_date" : "2018-01-19T00:00:00Z",
  "bugzilla" : {
    "description" : "squid: Incorrect pointer handling in HTTP processing and certificate download can lead to denial of service",
    "id" : "1536942",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1536942"
  },
  "cvss3" : {
    "cvss3_base_score" : "6.8",
    "cvss3_scoring_vector" : "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-117",
  "details" : [ "The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4.0.23 contains a NULL Pointer Dereference vulnerability in HTTP Response X-Forwarded-For header processing that can result in Denial of Service to all clients of the proxy. This attack appear to be exploitable via Remote HTTP server responding with an X-Forwarded-For header to certain types of HTTP request. This vulnerability appears to have been fixed in 4.0.23 and later." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2020-03-31T00:00:00Z",
    "advisory" : "RHSA-2020:1068",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "squid-7:3.5.20-15.el7"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "squid",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Will not fix",
    "package_name" : "squid",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Will not fix",
    "package_name" : "squid34",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "squid",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2018-1000027\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-1000027" ],
  "name" : "CVE-2018-1000027",
  "mitigation" : {
    "value" : "A workaround for this issue is to set the \"log_uses_indirect_client off\" configuration directive in the squid configuration file (for example /etc/squid/squid.conf).",
    "lang" : "en:us"
  },
  "csaw" : false
}