CVE-2021-43453

CRITICAL

JerryScript <2.4.0 - Buffer Overflow

Title source: llm
STIX 2.1

Description

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.

References (1)

Core 1
Core References
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/jerryscript-project/jerryscript/issues/4754

Scores

CVSS v3 9.8
EPSS 0.0038
EPSS Percentile 59.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-125
Status published
Products (1)
jerryscript/jerryscript < 2.4.0
Published Apr 07, 2022
Tracked Since Feb 18, 2026