CVE-2023-6906 Totolink A7100RU HTTP POST Request main buffer overflow
Remote attackers can trigger a buffer overflow in the login handler of Totolink A7100RU routers, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-6906?
CVE-2023-6906 is a critical memory corruption vulnerability in Totolink A7100RU, published on 18 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability, which was classified as critical, was found in Totolink A7100RU 7.4cu.2313_B20191024. Affected 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 flag with the input ie8 leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-248268. 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-2023-6906?
It affects 1 product.
Products include Totolink A7100ru Firmware.
How do I fix CVE-2023-6906?
No fix has been published for CVE-2023-6906 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-2023-6906 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6906 exists.