{"id":"UBUNTU-CVE-2021-43453","details":"A Heap-based Buffer Overflow vulnerability exists in JerryScript 2.4.0 and prior versions via an out-of-bounds read in parser_parse_for_statement_start in the js-parser-statm.c file. This issue is similar to CVE-2020-29657.","modified":"2026-04-22T12:59:52.759967Z","published":"2022-04-07T21:15:00Z","upstream":["CVE-2021-43453"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-43453"},{"type":"REPORT","url":"https://github.com/jerryscript-project/jerryscript/issues/4754"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-43453"}],"affected":[{"package":{"name":"iotjs","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/iotjs@1.0-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"iotjs","binary_version":"1.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43453.json"}},{"package":{"name":"iotjs","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/iotjs@1.0+715-1ubuntu2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0+715-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"iotjs","binary_version":"1.0+715-1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43453.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}