CVE-2024-7909 TOTOLINK EX1200L cstecgi.cgi setLanguageCfg stack-based overflow

High 8.7 Published 18 Aug 2024 Updated 21 Aug 2024

Remote attackers can trigger a stack-based buffer overflow in the setLanguageCfg function of the TOTOLINK EX1200L, 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-2024-7909?

CVE-2024-7909 is a high-severity memory corruption vulnerability in TOTOLINK EX1200L, published on 18 Aug 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability has been found in TOTOLINK EX1200L 9.3.5u.6146_B20201023 and classified as critical. Affected by this vulnerability is the function setLanguageCfg of the file /www/cgi-bin/cstecgi.cgi. The manipulation of the argument langType leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. 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-2024-7909?

It affects 1 product.

Products include Totolink Ex1200l Firmware.

How do I fix CVE-2024-7909?

No fix has been published for CVE-2024-7909 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-2024-7909 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-7909 exists.

Sources

Also known as GHSA-fvhq-6pjg-jc69.