CVE-2023-7187 Totolink N350RT HTTP POST Request stack-based overflow

Medium 5.5 Published 31 Dec 2023 Updated 2 Aug 2024

A stack-based buffer overflow in the HTTP POST handler allows attackers to execute arbitrary code on Totolink N350RT routers.

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

What is CVE-2023-7187?

CVE-2023-7187 is a medium-severity memory corruption vulnerability in Totolink N350RT, published on 31 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability was found in Totolink N350RT 9.3.5u.6139_B20201216. It has been rated as critical. This issue affects some unknown processing of the file /cgi-bin/cstecgi.cgi?action=login&flag=ie8 of the component HTTP POST Request Handler. The manipulation leads to stack-based buffer overflow. The exploit has been disclosed to the public and may be used. The identifier VDB-249389 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-121

Which versions are affected by CVE-2023-7187?

It affects 1 product.

Products include Totolink N350rt Firmware.

How do I fix CVE-2023-7187?

No fix has been published for CVE-2023-7187 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-2023-7187 being exploited?

There is no known exploitation of CVE-2023-7187 in the wild and no public exploit code.

Sources

Also known as GHSA-w6vc-3rw3-4m6g.