Use After Free in Jerryscript

CVE-2020-23302

There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in JerryScript 2.2.0

Vulnerability class: Use-After-Free

EPSS: 0.013 (66.8th 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 — versions 2.2.0
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

References

cve@mitre.org (x_refsource_CONFIRM, Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-23302?: CVE-2020-23302 is a critical-severity vulnerability in Jerryscript, classified under Use After Free. CVSS score: 9.8/10. Published 2021-06-10.
How severe is CVE-2020-23302?: Critical severity. CVSS v3 base score is 9.8 out of 10.