CVE-2024-0997 Totolink N200RE cstecgi.cgi setOpModeCfg stack-based overflow

High 7.2 Published 29 Jan 2024 Updated 5 Sep 2024

Remote attackers can trigger a stack-based buffer overflow in the router's CGI interface to potentially execute arbitrary code.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2024-0997?

CVE-2024-0997 is a high-severity memory corruption vulnerability in Totolink N200RE, published on 29 Jan 2024. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A vulnerability was found in Totolink N200RE 9.3.5u.6139_B20201216 and classified as critical. Affected by this issue is the function setOpModeCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument pppoeUser 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-252266 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-121

Which versions are affected by CVE-2024-0997?

It affects 1 product.

Products include Totolink N200re Firmware.

How do I fix CVE-2024-0997?

No fix has been published for CVE-2024-0997 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-2024-0997 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-0997 exists.

Sources

Also known as GHSA-5jgq-vcw8-3624.