CVE-2024-7336 TOTOLINK EX200 cstecgi.cgi loginauth buffer overflow

High 8.7 Published 1 Aug 2024 Updated 1 Aug 2024

Remote attackers can trigger a buffer overflow in the login authentication handler of TOTOLINK EX200 routers, potentially leading to 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-2024-7336?

CVE-2024-7336 is a high-severity memory corruption vulnerability in TOTOLINK EX200, published on 1 Aug 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability classified as critical was found in TOTOLINK EX200 4.0.3c.7646_B20201211. Affected by this vulnerability is the function loginauth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument http_host leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-273259. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-120

Which versions are affected by CVE-2024-7336?

It affects 1 product.

Products include Totolink Ex200 Firmware.

How do I fix CVE-2024-7336?

No fix has been published for CVE-2024-7336 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-2024-7336 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-7336 exists.

Sources

Also known as GHSA-vp2r-2xj4-fq27.