CVE-2001-1135 Missing authorization in n/a

High 7.5 Published 15 Mar 2002 Updated 8 Aug 2024

Internal users can reconfigure ZyXEL routers via Telnet/FTP on the WAN interface if they know the password, bypassing intended access controls.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2001-1135?

CVE-2001-1135 is a high-severity missing authorization vulnerability in n/a, published on 15 Mar 2002. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

ZyXEL Prestige 642R and 642R-I routers do not filter the routers' Telnet and FTP ports on the external WAN interface from inside access, allowing someone on an internal computer to reconfigure the router, if the password is known.

Which versions are affected by CVE-2001-1135?

It affects 1 product.

Products include Zyxel Prestige.

How do I fix CVE-2001-1135?

No fix has been published for CVE-2001-1135 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2001-1135 being exploited?

There is no known exploitation of CVE-2001-1135 in the wild and no public exploit code.

Sources

Also known as GHSA-96qj-8842-2r33.