CVE-2021-3166 File upload in n/a
Attackers can upload arbitrary files as firmware updates on ASUS DSL-N14U-B1 routers, triggering service shutdowns and causing persistent denial of service.
- 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-2021-3166?
CVE-2021-3166 is a high-severity vulnerability in n/a, published on 18 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered on ASUS DSL-N14U-B1 1.1.2.3_805 devices. An attacker can upload arbitrary file content as a firmware update when the filename Settings_DSL-N14U-B1.trx is used. Once this file is loaded, shutdown measures on a wide range of services are triggered as if it were a real update, resulting in a persistent outage of those services.
Weakness: CWE-434
Which versions are affected by CVE-2021-3166?
It affects 1 product.
Products include Asus Dsl-N14u B1 Firmware.
How do I fix CVE-2021-3166?
No fix has been published for CVE-2021-3166 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-3166 being exploited?
There is no known exploitation of CVE-2021-3166 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-mm32-fp7q-h532.