{
  "threat_severity" : "Moderate",
  "public_date" : "2022-01-15T00:00:00Z",
  "bugzilla" : {
    "description" : "expat: Integer overflow in doProlog in xmlparse.c",
    "id" : "2044455",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2044455"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.8",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-190",
  "details" : [ "In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.", "expat (libexpat) is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability, confidentiality and integrity." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2022-03-28T00:00:00Z",
    "advisory" : "RHSA-2022:1069",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "expat-0:2.1.0-14.el7_9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-03-16T00:00:00Z",
    "advisory" : "RHSA-2022:0951",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "expat-0:2.2.5-4.el8_5.3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-11-08T00:00:00Z",
    "advisory" : "RHSA-2022:7692",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "xmlrpc-c-0:1.51.0-8.el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Advanced Update Support",
    "release_date" : "2025-12-09T00:00:00Z",
    "advisory" : "RHSA-2025:22871",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.2",
    "package" : "expat-0:2.2.10-1.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
    "release_date" : "2025-12-04T00:00:00Z",
    "advisory" : "RHSA-2025:22785",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.4",
    "package" : "expat-0:2.2.10-1.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
    "release_date" : "2025-12-04T00:00:00Z",
    "advisory" : "RHSA-2025:22785",
    "cpe" : "cpe:/o:redhat:rhel_eus_long_life:8.4",
    "package" : "expat-0:2.2.10-1.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-05-17T00:00:00Z",
    "advisory" : "RHBA-2022:4046",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "expat-0:2.2.10-12.el9_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-05-17T00:00:00Z",
    "advisory" : "RHBA-2022:4046",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "expat-0:2.2.10-12.el9_0"
  }, {
    "product_name" : "Text-Only JBCS",
    "release_date" : "2022-10-26T00:00:00Z",
    "advisory" : "RHSA-2022:7144",
    "cpe" : "cpe:/a:redhat:jboss_core_services:1",
    "package" : "expat"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "expat",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "firefox",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "thunderbird",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "xulrunner",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Affected",
    "package_name" : "firefox",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Affected",
    "package_name" : "thunderbird",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Will not fix",
    "package_name" : "xulrunner",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "firefox",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "thunderbird",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "firefox",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "thunderbird",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "xmlrpc-c",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2021-46143\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-46143\nhttps://github.com/libexpat/libexpat/issues/532" ],
  "name" : "CVE-2021-46143",
  "csaw" : false
}