CVE-2021-43453
Last modified
CVE-2021-43453 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Jerryscript | Jerryscript | <= 2.4.0 |
References
- https://github.com/jerryscript-project/jerryscript/issues/4754Exploit, Issue Tracking, Third Party Advisory
- https://github.com/jerryscript-project/jerryscript/issues/4754Exploit, Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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