CVE-2020-23321 Memory corruption in n/a

Critical 9.8 Published 10 Jun 2021 Updated 4 Aug 2024

Heap buffer overflow in JerryScript allows attackers to execute arbitrary code or cause 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-2020-23321?

CVE-2020-23321 is a critical memory corruption 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-buffer-overflow at lit-strings.c:431 in lit_read_code_unit_from_utf8 in JerryScript 2.2.0.

Weakness: CWE-787

Which versions are affected by CVE-2020-23321?

It affects 1 product.

Products include Jerryscript Jerryscript.

How do I fix CVE-2020-23321?

No fix has been published for CVE-2020-23321 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-23321 being exploited?

There is no known exploitation of CVE-2020-23321 in the wild and no public exploit code.

All Jerryscript Jerryscript vulnerabilities

Sources

Also known as GHSA-q6cq-2jc2-cpx5, UBUNTU-CVE-2020-23321.