CVE-2023-44418 D-Link DIR-X3260 Prog.cgi Heap-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 DIR-X3260 routers via a heap buffer overflow in prog.cgi.

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-2023-44418?

CVE-2023-44418 is a high-severity memory corruption vulnerability in D-Link DIR-X3260, 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 DIR-X3260 Prog.cgi Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-X3260 routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the prog.cgi binary, which handles HNAP requests made to the lighttpd webserver. The issue results from the lack of proper validation of the length an user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20727.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2023-44418?

It affects 1 product.

Products include Dlink Dir-X3260 Firmware.

How do I fix CVE-2023-44418?

No fix has been published for CVE-2023-44418 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-2023-44418 being exploited?

There is no known exploitation of CVE-2023-44418 in the wild and no public exploit code.

Sources

Also known as GHSA-qx3c-9xx3-55gj.