CVE-1999-0894 Missing authorization in n/a

Critical 10.0 Published 4 Jan 2000 Updated 1 Aug 2024

Local users can write to other terminals due to missing Unix98 pty support in the screen program, allowing unauthorized data modification.

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-1999-0894?

CVE-1999-0894 is a critical missing authorization vulnerability in Redhat Linux, published on 4 Jan 2000. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Red Hat Linux screen program does not use Unix98 ptys, allowing local users to write to other terminals.

Which versions are affected by CVE-1999-0894?

It affects 1 product.

Products include Redhat Linux.

How do I fix CVE-1999-0894?

No fix has been published for CVE-1999-0894 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-1999-0894 being exploited?

There is no known exploitation of CVE-1999-0894 in the wild and no public exploit code.

All Redhat Linux vulnerabilities

Sources

Also known as GHSA-gc92-56cg-2qv2.