{
  "threat_severity" : "Moderate",
  "public_date" : "2023-03-15T00:00:00Z",
  "bugzilla" : {
    "description" : "rubygem-rack: denial of service in header parsing",
    "id" : "2179649",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2179649"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
    "status" : "verified"
  },
  "cwe" : "CWE-1333",
  "details" : [ "There is a denial of service vulnerability in the header parsing component of Rack.", "A denial of service vulnerability was found in rubygem-rack in how it parses headers. A carefully crafted input can cause header parsing to take an unexpected amount of time, possibly resulting in a denial of service." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2023-05-16T00:00:00Z",
    "advisory" : "RHSA-2023:3082",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::highavailability",
    "package" : "pcs-0:0.10.15-4.el8_8.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support",
    "release_date" : "2023-04-25T00:00:00Z",
    "advisory" : "RHSA-2023:1961",
    "cpe" : "cpe:/a:redhat:rhel_eus:8.4::highavailability",
    "package" : "pcs-0:0.10.8-1.el8_4.4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Extended Update Support",
    "release_date" : "2023-05-31T00:00:00Z",
    "advisory" : "RHSA-2023:3403",
    "cpe" : "cpe:/a:redhat:rhel_eus:8.6::highavailability",
    "package" : "pcs-0:0.10.12-6.el8_6.4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-05-09T00:00:00Z",
    "advisory" : "RHSA-2023:2652",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9::highavailability",
    "package" : "pcs-0:0.11.4-7.el9_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "release_date" : "2023-04-25T00:00:00Z",
    "advisory" : "RHSA-2023:1981",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.0::highavailability",
    "package" : "pcs-0:0.11.1-10.el9_0.4"
  }, {
    "product_name" : "Red Hat Satellite 6.14 for RHEL 8",
    "release_date" : "2023-11-08T00:00:00Z",
    "advisory" : "RHSA-2023:6818",
    "cpe" : "cpe:/a:redhat:satellite:6.14::el8",
    "package" : "rubygem-rack-0:2.2.7-1.el8sat"
  }, {
    "product_name" : "Red Hat Satellite 6.14 for RHEL 8",
    "release_date" : "2023-11-08T00:00:00Z",
    "advisory" : "RHSA-2023:6818",
    "cpe" : "cpe:/a:redhat:satellite_capsule:6.14::el8",
    "package" : "rubygem-rack-0:2.2.7-1.el8sat"
  }, {
    "product_name" : "RHOL-5.6-RHEL-8",
    "release_date" : "2023-04-26T00:00:00Z",
    "advisory" : "RHSA-2023:1953",
    "cpe" : "cpe:/a:redhat:logging:5.6::el8",
    "package" : "openshift-logging/fluentd-rhel8:v1.14.6-113"
  }, {
    "product_name" : "RHOL-5.7-RHEL-8",
    "release_date" : "2023-06-12T00:00:00Z",
    "advisory" : "RHSA-2023:3495",
    "cpe" : "cpe:/a:redhat:logging:5.7::el8",
    "package" : "openshift-logging/fluentd-rhel8:v1.14.6-140"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Affected",
    "package_name" : "3scale-amp-backend-container",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Will not fix",
    "package_name" : "3scale-amp-zync-container",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "pcs",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Storage 3",
    "fix_state" : "Will not fix",
    "package_name" : "rubygem-rack",
    "cpe" : "cpe:/a:redhat:storage:3"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-27539\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-27539\nhttps://discuss.rubyonrails.org/t/cve-2023-27539-possible-denial-of-service-vulnerability-in-racks-header-parsing/82466\nhttps://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2023-27539.yml\nhttps://rubysec.com/advisories/CVE-2023-27539/" ],
  "name" : "CVE-2023-27539",
  "mitigation" : {
    "value" : "Setting Regexp.timeout in Ruby 3.2 is a possible workaround.",
    "lang" : "en:us"
  },
  "csaw" : false
}