CVE-2020-23302 Use after free in n/a

Critical 9.8 Published 10 Jun 2021 Updated 4 Aug 2024

A heap-use-after-free in JerryScript allows attackers to execute arbitrary code or cause a denial of service via crafted JavaScript.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-23302?

CVE-2020-23302 is a critical use after free vulnerability in Jerryscript Jerryscript, published on 10 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-416

Which versions are affected by CVE-2020-23302?

It affects 1 product.

Products include Jerryscript Jerryscript.

How do I fix CVE-2020-23302?

No fix has been published for CVE-2020-23302 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2020-23302 being exploited?

There is no known exploitation of CVE-2020-23302 in the wild and no public exploit code.

All Jerryscript Jerryscript vulnerabilities

Sources

Also known as GHSA-x87v-6qg8-4jhm, UBUNTU-CVE-2020-23302.