CVE-2023-4883 Multiple vulnerabilities in Open5GS

High 7.5 Published 3 Oct 2023 Updated 19 Sep 2024

An attacker can cause a service outage in Open5GS by sending a crafted JSON string that triggers an invalid pointer release.

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-2023-4883?

CVE-2023-4883 is a high-severity use after free vulnerability in Open5gs Open5gs, published on 3 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Invalid pointer release vulnerability. Exploitation of this vulnerability could allow an attacker to interrupt the correct operation of the service by sending a specially crafted json string to the VNF (Virtual Network Function), and triggering the ogs_sbi_message_free function, which could cause a service outage.

Weakness: CWE-763

Which versions are affected by CVE-2023-4883?

It affects 1 product.

Products include Open5gs Open5gs.

How do I fix CVE-2023-4883?

No fix has been published for CVE-2023-4883 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-2023-4883 being exploited?

There is no known exploitation of CVE-2023-4883 in the wild and no public exploit code.

All Open5gs Open5gs vulnerabilities

Sources

Also known as GHSA-2cqc-g5jj-27mw.