CVE-2023-33613 Memory corruption in n/a

Medium 5.5 Published 6 Jun 2023 Updated 8 Jan 2025

Attackers can cause a denial of service via heap buffer overflow when parsing private keys in the axTLS library.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-33613?

CVE-2023-33613 is a medium-severity memory corruption vulnerability in n/a, published on 6 Jun 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

axTLS v2.1.5 was discovered to contain a heap buffer overflow in the bi_import function in axtls-code/crypto/bigint.c. This vulnerability allows attackers to cause a Denial of Service (DoS) when parsing a private key.

Weakness: CWE-787

Which versions are affected by CVE-2023-33613?

It affects 1 product.

Products include Axtls Project Axtls.

How do I fix CVE-2023-33613?

No fix has been published for CVE-2023-33613 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-2023-33613 being exploited?

There is no known exploitation of CVE-2023-33613 in the wild and no public exploit code.

Sources

Also known as GHSA-3485-35jp-jwmx, UBUNTU-CVE-2023-33613.