CVE-2023-39238 ASUS RT-AX55、RT-AX56U_V2 - Format String - 1

High 7.2 Published 7 Sep 2023 Updated 26 Sep 2024

A format string vulnerability in ASUS routers allows remote administrators to execute arbitrary code or disrupt services.

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-2023-39238?

CVE-2023-39238 is a high-severity vulnerability in ASUS RT-AX55, published on 7 Sep 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

It is identified a format string vulnerability in ASUS RT-AX56U V2. This vulnerability is caused by lacking validation for a specific value within its set_iperf3_svr.cgi module. A remote attacker with administrator privilege can exploit this vulnerability to perform remote arbitrary code execution, arbitrary system operation or disrupt service.

Weakness: CWE-134

Which versions are affected by CVE-2023-39238?

It affects 3 products.

Products include Asus Rt-Ac86u Firmware, Asus Rt-Ax55 Firmware, Asus Rt-Ax56u V2 Firmware.

How do I fix CVE-2023-39238?

No fix has been published for CVE-2023-39238 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-39238 being exploited?

There is no known exploitation of CVE-2023-39238 in the wild and no public exploit code.

Sources

Also known as GHSA-r2q6-vc3h-88w5.