{
  "threat_severity" : "Moderate",
  "public_date" : "2020-09-15T00:00:00Z",
  "bugzilla" : {
    "description" : "oniguruma: Buffer overflow in concat_opt_exact_str could result in DoS",
    "id" : "1884111",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1884111"
  },
  "cvss3" : {
    "cvss3_base_score" : "8.6",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
    "status" : "draft"
  },
  "cwe" : "CWE-787",
  "details" : [ "A flaw was found in oniguruma. An attacker, able to supply a regular expression for compilation, may be able to overflow a buffer by one byte in concat_opt_exact_str in src/regcomp.c ." ],
  "statement" : "Red Hat Ceph Storage 4 is not affected because the affected method, concat_opt_exact_str is not shipped. However, there is an identical flaw in concat_opt_exact_info_str and concat_opt_exact_info, which do not exist in the most recent version of oniguruma as methods. The impact is rated as low because we ship an older version without this exact exploit, so an attacker could not simply copy and paste this exploit, but would need to dig into the code itself and modify this attack for the older version of the code.",
  "package_state" : [ {
    "product_name" : "Red Hat Ceph Storage 4",
    "fix_state" : "Out of support scope",
    "package_name" : "oniguruma",
    "cpe" : "cpe:/a:redhat:ceph_storage:4",
    "impact" : "low"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Out of support scope",
    "package_name" : "php",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Out of support scope",
    "package_name" : "php53",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "oniguruma",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "php",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "php",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "ruby",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "oniguruma",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Will not fix",
    "package_name" : "php:7.2/php",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Will not fix",
    "package_name" : "php:7.3/php",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "ruby:2.5/ruby",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "ruby:2.6/ruby",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Integration Service Registry",
    "fix_state" : "Not affected",
    "package_name" : "Joni",
    "cpe" : "cpe:/a:redhat:integration:1"
  }, {
    "product_name" : "Red Hat JBoss Fuse 6",
    "fix_state" : "Not affected",
    "package_name" : "Joni",
    "cpe" : "cpe:/a:redhat:jboss_fuse:6"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Will not fix",
    "package_name" : "oniguruma",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat Software Collections",
    "fix_state" : "Will not fix",
    "package_name" : "rh-php72-php",
    "cpe" : "cpe:/a:redhat:rhel_software_collections:3"
  }, {
    "product_name" : "Red Hat Software Collections",
    "fix_state" : "Will not fix",
    "package_name" : "rh-php73-php",
    "cpe" : "cpe:/a:redhat:rhel_software_collections:3"
  }, {
    "product_name" : "Red Hat Software Collections",
    "fix_state" : "Out of support scope",
    "package_name" : "rh-ruby24-ruby",
    "cpe" : "cpe:/a:redhat:rhel_software_collections:3"
  }, {
    "product_name" : "Red Hat Software Collections",
    "fix_state" : "Not affected",
    "package_name" : "rh-ruby25-ruby",
    "cpe" : "cpe:/a:redhat:rhel_software_collections:3"
  }, {
    "product_name" : "Red Hat Software Collections",
    "fix_state" : "Not affected",
    "package_name" : "rh-ruby26-ruby",
    "cpe" : "cpe:/a:redhat:rhel_software_collections:3"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2020-26159\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-26159\nhttps://github.com/kkos/oniguruma/commit/cbe9f8bd9cfc6c3c87a60fbae58fa1a85db59df0\nhttps://github.com/kkos/oniguruma/issues/207" ],
  "name" : "CVE-2020-26159",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}