The TIOCCONS vulnerability is a local privilege escalation bug in SunOS 4.1.1, which allows an attacker to gain elevated privileges by manipulating the console output and input permissions. This can lead to unauthorized access to sensitive system resources.
You are affected if you use SunOS 4.1.1. To check if your system is vulnerable, run the following command: strings /dev/console | grep TIOCCONS. Note that this vulnerability is specific to SunOS 4.1.1 and not applicable to other operating systems.
To fix this vulnerability, you can apply the patch from CERT (http://www.cert.org/advisories/CA-1990-12.html). Alternatively, you can immediately mitigate the risk by restricting console access to authorized users only.