CVE-2023-50208 D-Link G416 ovpncfg Stack-based Buffer Overflow Remote Code Execution Vulnerability

High 8.8 Published 3 May 2024 Updated 2 Aug 2024

Network-adjacent attackers can execute arbitrary code as root on D-Link G416 routers via a stack-based buffer overflow in the HTTP service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-50208?

CVE-2023-50208 is a high-severity memory corruption vulnerability in D-Link G416, published on 3 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

D-Link G416 ovpncfg Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link G416 routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the HTTP service listening on TCP port 80. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21441.

Weakness: CWE-787, CWE-121

Which versions are affected by CVE-2023-50208?

It affects 1 product.

Products include Dlink G416 Firmware.

How do I fix CVE-2023-50208?

No fix has been published for CVE-2023-50208 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-2023-50208 being exploited?

There is no known exploitation of CVE-2023-50208 in the wild and no public exploit code.

Sources

Also known as GHSA-2v9r-f76x-xq4j.