Out-of-bounds Read in Jerryscript
CVE-2021-43453
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.
Vulnerability class: Buffer Overflow
EPSS: 0.012 (66.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Jerryscript
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
Frequently asked questions
- What is CVE-2021-43453?
- CVE-2021-43453 is a critical-severity vulnerability in Jerryscript, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2022-04-07.
- How severe is CVE-2021-43453?
- Critical severity. CVSS v3 base score is 9.8 out of 10.