CVE-2023-7214 Totolink N350RT HTTP POST Request main stack-based overflow

Medium 6.3 Published 7 Jan 2024 Updated 14 Nov 2024

Remote attackers can trigger a stack-based buffer overflow in the login handler of Totolink N350RT routers, potentially leading to arbitrary code execution.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-7214?

CVE-2023-7214 is a medium-severity memory corruption vulnerability in Totolink N350RT, published on 7 Jan 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability, which was classified as critical, has been found in Totolink N350RT 9.3.5u.6139_B20201216. Affected by this issue is the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation of the argument v8 leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-249770 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-787, CWE-121

Which versions are affected by CVE-2023-7214?

It affects 1 product.

Products include Totolink N350rt Firmware.

How do I fix CVE-2023-7214?

No fix has been published for CVE-2023-7214 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-2023-7214 being exploited?

There is no known exploitation of CVE-2023-7214 in the wild and no public exploit code.

Sources

Also known as GHSA-cpjv-h35c-937x.