CVE-2022-23971 ASUS RT-AX56U - Path Traversal
An unauthenticated LAN attacker can overwrite system files via path traversal in the update_PLC/PORT file, causing service disruption on ASUS RT-AX56U routers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-23971?
CVE-2022-23971 is a high-severity path traversal vulnerability in ASUS RT-AX56U, published on 7 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ASUS RT-AX56U’s update_PLC/PORT file has a path traversal vulnerability due to insufficient filtering for special characters in the URL parameter. An unauthenticated LAN attacker can overwrite a system file by uploading another PLC/PORT file with the same file name, which results in service disruption.
Weakness: CWE-22
Which versions are affected by CVE-2022-23971?
It affects 1 product.
Products include Asus Rt-Ax56u Firmware.
How do I fix CVE-2022-23971?
No fix has been published for CVE-2022-23971 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2022-23971 being exploited?
There is no known exploitation of CVE-2022-23971 in the wild and no public exploit code.
Other vulnerabilities in ASUS RT-AX56U
Sources
Also known as GHSA-prcc-4qf3-mc5c.