CVE-2023-32140 D-Link DAP-1360 webproc var:sys_Token Heap-based Buffer Overflow Remote Code Execution Vulnerability

High 7.5 Published 3 May 2024 Updated 5 Feb 2025

Network-adjacent attackers can execute arbitrary code as root on D-Link DAP-1360 routers via a heap buffer overflow in the webproc endpoint.

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-2023-32140?

CVE-2023-32140 is a high-severity memory corruption vulnerability in D-Link DAP-1360, 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 DAP-1360 webproc var:sys_Token Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1360 routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling requests to the /cgi-bin/webproc endpoint. When parsing the var:sys_Token parameter, the process does not properly validate the length of 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-18418.

Weakness: CWE-121, CWE-122

Which versions are affected by CVE-2023-32140?

It affects 2 products.

Products include Dlink Dap-1360 Firmware, Dlink Dap-2020 Firmware.

How do I fix CVE-2023-32140?

No fix has been published for CVE-2023-32140 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-2023-32140 being exploited?

There is no known exploitation of CVE-2023-32140 in the wild and no public exploit code.

Sources

Also known as GHSA-jxcj-3v7x-m3q6.