{
  "threat_severity" : "Moderate",
  "public_date" : "2021-11-09T00:00:00Z",
  "bugzilla" : {
    "description" : "lua: stack overflow in lua_resume of ldo.c allows a DoS via a crafted script file",
    "id" : "2047672",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2047672"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-787",
  "details" : [ "Stack overflow in lua_resume of ldo.c in Lua Interpreter 5.1.0~5.4.4 allows attackers to perform a Denial of Service via a crafted script file.", "A stack overflow issue was discovered in Lua in the lua_resume() function of 'ldo.c'. This flaw allows a local attacker to pass a specially crafted file to the Lua Interpreter, causing a crash that leads to a denial of service." ],
  "statement" : "This vulnerability does not affect Red Hat Enterprise Linux 8, because code-base was completely rewritten between 5.3 and 5.4. So, RHEL-8 is unlikely to be affected by this or a similar issue.\nThis flaw is marked as Out-of-Support-Scope for Red Hat Enterprise Linux 6 and 7 because the flaw impact is moderate. For additional information, refer to the Red Hat Enterprise Linux Life Cycle & Update Policy: https://access.redhat.com/support/policy/updates/errata/.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-02-28T00:00:00Z",
    "advisory" : "RHSA-2023:0957",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "lua-0:5.4.4-2.el9_1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-02-28T00:00:00Z",
    "advisory" : "RHSA-2023:0957",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "lua-0:5.4.4-2.el9_1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "release_date" : "2023-03-14T00:00:00Z",
    "advisory" : "RHSA-2023:1211",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.0",
    "package" : "lua-0:5.4.4-1.el9_0.1"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "lua",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "lua",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "libreoffice:flatpak/lua",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "lua",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat JBoss Core Services",
    "fix_state" : "Not affected",
    "package_name" : "lua",
    "cpe" : "cpe:/a:redhat:jboss_core_services:1"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2021-43519\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-43519" ],
  "name" : "CVE-2021-43519",
  "csaw" : false
}